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Theses and Dissertations
Thesis and Dissertation Collection
1952
The unstable isotopes of platinum
Brice, Charles Simonton
Ohio State University
http://hdl.handle.net/10945/14749
Downloaded from NPS Archive: Calhoun
Library
U. S. Naval Postgraduate School
Montecey, California
THE UNSTABLE ISOTOPES OF PLATINTJM
A Thesis
Presented in Partial Fulfillment of the Requirements
for the Degree of
fisaater
of Science
By
TOM DEPHER COLLISON, B,Sc.
and
GHiiRLES SImOKTOS BRICE,JR., B.Sc.
It
The Ohio State University
1952
Approved by:
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of 1«3« tb*s thr#< hoora*
two 4a7
c^r
four day p«rlo<2*
'^ha
xzo
^rlod
avldet^ea ^f a
awH^la la at ill Ha lag
fdllcaa^*
Tc dkitaPBlna tba {Mitura a&d rata ef daaai' df
al6«trc&i&sii«tle ra<llatloi> 949 mnd. 1*45
tJ^a aaaik
'^'^v
alaatrcMia, a 10 hour pr<^i>& boalMiT^cHKit oX iridlun «&a
«ada*
4 ohaftisal aaparatlcn »aa aada
dMwrlDad
pravloiial^s
ti^r
tha a^thc^d
^ba ^aaaj* of tha ^latiium Iraatioe
i« twiii^ foiXovad a& l»atb tha x«rax
«ii^ ioata
a^^mtara*
throtL$h a if* 15 mg/^i'^ ml\m%sxo» (t^m^rb^r gu the
^ta
afi4
tuba*
?ha dlraot daaay a^^va on tha liata tmba atarta with m
parlod cf i^<mt 3«9 ^la^a*
mig/msi'^
t^atwasfi
»l'smlmBM starts at
tha ^laay
throu^
a^o^ £«6 da^a*
tlia
I?«X5
fha &ittttS'%t:i^m
tha two esrwoa jpXota aa a atral^bt Xiaa at a
U
4«oa
thin m$fklu
tiAj perloti*
t^rUimm timt the •114 ^av
•X*etr&c; dtcft^c nitb th9 lour day p^drlGd*
ffio
rstl^ ef
the InltlAl netivlty !i«t«««n the deeay eunr« tc that of
ti»t
eurte «lth
tli«
A)>«orb«r ««s five to ou«, ahoirlssg tbmt
%t» gremter piurt of the Aotlvltj l» dum tc the scft
eXeotrtm eltb tbe four dey
f>erio<l*
& eeries of eluftiaae e&eorptlc«i »e4ieanMMWte»
of vhleb f Igiure 6 le typleel^ «ee aade*
result • le fe oi>teined»
lUfiied
aetlvltiee eee folloved
MMis^sresecte (f lg*9)*
rete
na
by^
e^sr potion
thm •1X4 4eM^;r* *^ • ^oar
^lats m%
dli^
m two 4e3r rt^^m
eerlee or elu&ij»uK «i>«Q^tiGi<s ihroui^
m^^&^
little) «ae
of polyetyreoe Ctl>e polystyrene eute
ssftHe
tusd
t^
.es
i''.
oitt
x»re;r eotlvltj' ver;f
thej
over e period of eeven d«^s*
tielf thieluieeeee
of 1«^5 k°
Aeee^r ef tbeee
t^r^akd&Hn of tbe
eXl eleetro&«« imt cSeereeees
^ow
t^
£^eir«
t&e •49 e;^ 1«4£ ea&
s.
661*S
end poijate were 4&ter«»
i^^Ieetroa
at •114» «499 tucd 1*4&
&^at«i»te£^
for eleetrds^gisetio redietl^aae
Figure 10 la one of theee
easorpt Io&e«
the l»a5
wftve
a''
{fi«» Eev)
la en istex^ediete
le&gth for the L x*^eye of iri^iuei*
4eoexed at es l&tefsiedleie rate of
thus saei \» prea^mt wlttt
le^tc-i:-***
h^U %m
at>c&tt
ffele
three dai^e
%me da^
aiid t&'^t
tl^ #§5 A^ <14«S S#v> deoeye with
perl<^*
19
eser^
tise
mistd
4ay
tw« day
1
AllAliOV
20
DECAY OF
Ir
+
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e-
ENGERIES
Pt
FRACTION
100
Mcv
4 DAY 2 HOURS
114
50
40
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._
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10
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HOUR
DAYS AFTER BOMBARDMENT
nom t
21
S>.
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A4IAJ43V
Figure Be* 1^
4$S
«b«C!r]^ti«A KMisure^ttnto through &il*5
m^nm^ p^tyttyr^tm
•etivlty pXots at About 5«4
:i»x*#
j^» »Bt in
roar 4«^ period*
&•
;>oih tti«
t«o
sttd
iaai^atiBg
1»
tiott it
OflHMi tHwter^sftata of pX«tl«s»«
^HMt
Tbr««
Llthlui
lMato«r<3»tiQts
c£i
p2«tlim9i«
«lth prctoa* to o^«ln X7»5 Met
wfts ooiid«rd«d
^otcA r«a la tiofu
«#r« ti&d*
AM thm
gttuift rftdlatlois
1« p«ii»trii;tls^^
plmtimm foils w«r« uood as a
la ocfth oaso uasmraaM
target ao that aisoltaxiaGua roadls^a oouXd
diffaraist InstriHseata*
Ii^
l»a
on
taicaa
e&a of tbm beadMMPdteauts «
rod of Silver platlB\»i vaa uaoci to oatat^Xlah that iba
aotlTltlas foaod In tha platinu^^ folia wmr^ net
4isa
to
^ba taat «aa poaitiva aa tha SlXgar foil
taqniiritlaa*
4ls««ya alth parioda of 30 &l&ttta$^ 7b mismtmn^
^•S
hsmtm aad 4«dad da^a» i^iioh ara in
parloda
»b tailed in tha folia*
^J»a
s*^^'*^*^
tliia
to seaaatrr of tha rod»
tba «HiXl aoXld aa^la It au^taadad^ It a «otlvity
aaa
•atuiidoral»l7 Xoaar tba& th«t of aaj of t&a foils, Aud
t^r^tcrm tba saaa^raaia&ta
for aa««ra«3r»
froisi
Elisor platlsftm
tba folia ar# iiMid
Isi
tha itmn of a foil
aaa nmt avallftbla*
fhm 51 Aicuta {^orioa
Ptl9t aa
J^
iaotepa*
alac ^!*aaant !&
tha^
ha4i
baoa aaaigziad to
It lodleatoa^a s^utroi^ fXiax «&a
^iaia»ard^ista« &&d
t^raf ora
if
Jf
itljAjpV
24
4
^
period b€ill»v«d to
tlrat pX«tinuc plus giiiia
7!Mi
•iz
iliQttrft
i««iK«rle with %im dl
dteMtlMu
rutt ifh^ of
amuBged
Xbr«« tftr;^»ts ««!>•
tbm ittt^r JAok«t of tbe t«r^«t hold«p«
««;•
foll ci—
on four ««par«to
ftliMiita
^34#2*^
tttvlr d^soaj
lttgtriMi»nt »» asul
aX'swiiiiafli
aboorpiloo co«s«ir«MOnt« vor« sAdo oa tho beta tub« aod
tho x«»r«y tui>o, which ««ro two
mA
Tbo oloctr^^Mtort
tho«« lo«tnt««iita«
ojf
tlM paaltroa a wMit
T
«•!*• tho
othar two InttrnMmta tiaad to »aaattre daaay*
Xha daeajr ourt^aa all aataollshad otmalataot
raaults*
o«i
tha posltroft mmmtmr tba daaay of alaotr&aa
tadldatad a ahort pario4 of a^aat T9 xiimtaa
hour i»arlcd«
Ji
Als««tijr aoH
a 19
vacBtttlo f l9l4 wtrrn^ aftaisfh ta
allmlnata aoft alaotroaa waa laaad*
ua
41aaa»natil»»
t^
t£ft«
tfo
poaltrooa wara
alaalMPawi t ar 40WKf iMa «aaa«rait
^rwgli «35 l&obaa
of alaaiMMNi
fha
direct daoay eurva gava parloda of 7d ai&utasy 19
lwaara» asS 4»08S da?a«
tha ilaaay e%urra through o«ES
laalhaa aXsHifjuai iH^ovad tluit o&lir 1^^ 7^ sltiiita arid
4*06 da? lootora asltt«d
ati
alaatrosagoatla radiatl^&»
totlaatiott of tha 19 h&str
th^o x*ra:!r
ftittata^
t«^
^•^
apprae labia ascmfit of
fh^ra wmm wmrj llttla
parl^
c^
In thl» tmr9m»
tha a&al^aad daoa^ etarva ahow«^f3
him2*a
aad 4*08^ da^ i^lf«llva«
ai:^
pr«simt»
A tfeo^ «urv« froa tbl*
musam
mhmlsBas^ Again iz^laat^d
tub* through
4tilt
19 bour
tliAt ttio
wne/mt^
ifiO'iop*
«slt« ^Qs^MirstlyelX IittX« electrav^igilstlo radiation*
Qb tlM
tMtft tttlM tlia Myn»
perlc^a v«re attalsied*
AXiwIfiw ab^crptlom »oaaarttBi»sfe« on
•«mt#rc
ln:iiottt«4
lOd asA**^
»
'uadi
alactron and points «t 16
al^ctat
that it» 639 aoA pclst
€90 mg/iem^ vlth
^ppmmfd mlT
abscrptlon takaa or tka Sata
tu^
the Xlrst two hcur* aftar tha
tada fear
ftlatslstte
tlia
^
t>otl&
«is/«fli'^
oxcaptloa
^^
f li^t
abloh mmm
bQft&ardsei:^;^*
vlttiJUi
"^^M^rikj
abaea*ptl&{^ aara aubla^ on tba lant
a^acrptica, ISS bwira aXtaiP %lm y»i1>arrtaattt» &raak«
doaik of tba aasttPptiott
a«t
eur^a livllaataa aa IntaraMNtlata
^liiit at approxluiataljr 90
a^om^
iora aotlTlt7 «aa abated t«
ol>tal£i siara
aoc^^ato oaaauraaaats mod tQ ass&olata tha diXfara&t
wixwiSf alectr^:^ ^ilttad vlth thair
A ana
h:tir i»<mim3pdmmA
propar baIf*XX«d««
alth tao f oXXs dXreetly
i>«siaath
thi9 raauXtad in we^rm
tha XlthluB targat «aa triad*
aotivit^r*
Daeaj and i^aerptlar! saatmraisamia ira^a i^da
as tba z^raj tuba aod en tba oata
t«te, p«rl6da ef 70 sin^tea^
vara o^talitad (fig* 12)*
f oXXoi^ad for
al^t
^^S
'^ha
balf-Xitrca*
tisl>a*
Oei
tha
jLora^-
ho&ra aad 4*03
d&:r«
foar 4mj parlsd aaa
4Xao
&xk
thl®
tu]»a
dMsay t&r^m£h t?X sg/a^*^ al^fei&^a aaa f &XXi3«ad aad
m
t^
AllAllOV
a?
b^tk tut>*»9 with roftults
;&s
^lov:
tA^alat«<l
Sfiwra after domDardaattt
Sleotr^o «w&
jj^liita
iu mg/est
MX
&
mo
146
SSO
90
trbft
#o^fgfi$ ii^lt^lag acrre&ti&& f&r «1{^@«
6^
mg/cis>
^
•X*!^ k«v^ S$0 sa^cm ••^i^
mvt
*
l§«v*9
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m^&&
o
«<a«lX4 £ev«
2-&
c-
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30
>*v
i&
thft «j»«orptloi«s
•l*etror^ at tbt
On
tii«
beta tuba
tt'«ft
0«U4
de^ity
ikev
•665
i>r
vlth th«
ooul^
^
tiot
m^
b« plf>tt»4»
•ll^
M«ir
h<^ur l»<»top«
«qA
I!:6Y
viUi ffTur dAy Xaotope.
li*v
tha 4«cay of th«
tik\>««
«!e4uii.re<l eciftri;!^*
ASSOC iAt« tb» vCas
lb*
xt&j
c& tbo
ibe I«4e
tftir
elsotrea la «aseeliitod vith olthor tJM Zo silutif or
Kg—flnatloc
?0 alftut* period*
tbft a«ttt tui»«
ef th« d«cay curv«
ot^
pX^oss It moTQ prooAnXj with tbA 70
IMM»ih»r six hour pXiitluua sitamm Iranterdatsui^
•dA*
"-n
this rxm four plAtlxiiui t4fcr^»t« «Mre ta««d*
^h« WilgAi* IridlMi
rtsd
;a*«Tle^«lT dA«crl^e4 aaA a
plAtis^m foil •aelos«d la a oadis^sa
teoMA^ Urn «at«r
th»
Xltl&lHii
o^Ki to
Jftokst*
!>iix
v»r« faftt*a«d
a loll w^« plae*^ tM2)*«th^
t«rg»t» «x^ « plfttlem« t«rsAt hol<2«r
«HNPtt«la
the llthiija t&rgot.
wm
mmSm
ott
all
fo'tir*
it«r«
&«40 o&
tto*
fell ^Ureirtli'
wm
Dec&y s«A8ur<^0nts
Al«nii»aft Ategv^ptloai seasurej&^^itft
th« plfttlsuat target holder*
uxic^i
th# t&rs«t
X^eed «i>Aorptloae
fti^
cm
vere «mlb»
o& the t&Ti^et holder*
the 4eee7 of tbe Silver platiauB rod mmt
dlsoueeed ^evlouel^r*
n&e 9«rlode In the de^&y etinre of the ce^liss
rnvsipp^d
toil eere the
wmi^a
es thcee previ^uely etteJj^d*
5X
^Jicrr.
.»'«.
'S
AxiAixav
3J.-A
TtMi 50
ainut« p«rl«tf «•• still pr^iKiut*
thl9 ii^Icat«d
the do sinut# i^eriod oculd b« fr.»»«d frcss f&at
tlukt
Ek»utr^ui«
Tike
ma
plat iann foil directly bwoeath the tergetr
Qserul* la a^ltlc^ to the perlcda reported prevlcualj,
a tee
ilaj perlr«d
vaa e^ldenfcly fonMid
reaetiee*
lev aetlTity*
fror. pX&tl2»»i X9fi tiy
192 acssiprleaa
I'X^Atifius
t2ae £iat)2j*al
mrj
«a« apparent at a
It
a gaia i^utrea
abcut 0«^:^ of
e«il?
ataxia i»latix»»» therefore the vsry loa
activity of tba plati2iu& 192 «aa to aa axpeotod.
Xtye
4*033 day period aaa f oHoeed for elevea balf«»livaa
aad tharerore ahoold
aa
toe
aaewrate (fig* IS},
ijftdiaetloa of a loxiger
rhore 9ad
ported in this aas^la*
T«e almtawe a}>aoz^tio:2 i^eaoure^ente vera
eaapletad en Utia foil oe the
riret five hoora after
^ta
taoe durl&^ the
brartwir^lwaiife*
^he eleotroxi ead
point prevlo«al7 aseoolated vith the ahort period eaa
ae«»3ired at €37
g/oR'^glTlas e value of 1*43
the eotlvity of the 30 aiiaute por lod at
tiie
SLair«
Aa
tlae of thXe
aaead a^aorptloo «aa laaa tha& 0»ai oouata per m^ismA^
t^
X«4a xev elaotroEi ^mn be def laltalsr aaaool&ted «lth
ttke
75 aiAsta period (fig*17)«
the 1$
foor
fltf/ea'^ ftud
digr
Ot^r
aljeorptlone voriil4^
2B0 ag/oa^ aad folate aa
«ad ti» 1^
It^
^lug
perl&da rati^otlvely*
alt^i
t^
^wi^imm
ai^aerptioa seaauresoDte aade 9 ^mys atid 9»7 da^s aft or
»os.
ehow an eleetron eod pcslnt at ^^-110
2S|/o®°^#
u
»
the pres^ticj* &f % or ^MSft i-adlfitlcm (,ft^»l8)»
to
^yrt^
«n!S
i£i«
»ls« or
the I«rg^ ftcXM *q$Xt It
th<3 ;^aiktli»yai
*aiit9iii^«4«
nor« actlvlt7 «&« c^4iiii»4 than vlih
:^ tbl« »«B{)1^
t2i«
tbo jr-ra7 tuT>«»
d00mj
Itt
aada*
tl»i othisr «tt«pX»ft«
»«««ured dir«atXy o»
iialng
6t>a{:r%>«rs«
2«9D0 sg/<sa^ laad iM»set*^r9*
tatfi
oosytidora^X?
It la also TMia^ at«a«urad ttxrota^h X70
•ca 271 x^eai^ alweioua
of tSL^mitsan
target btoXdar
and through 530
addition to this a aarlos
Ir.
w^&mxpmsiMif
Xaa<2 aua<>r^tlo&
^ing
mrtt
It is )»aXiavad th&t «han the varioan daaay
•nt lofi^ ^Gva
rtaah ]»as« Xlaes
that a&aXytl* of tlm various
«isft
can
ancS
aijar-^raa
l>a ^roltaii
<lo«a
al»it>:»r|^iaa »0ai»raat»i:^ts
aa«aj e.irvQ« to^thar will ^iv« a eofiaidarabXa
«a9ti£it
asd
of
infora^tloiu
It
«aa fotmd
oei
aaaljslr^g
»>aaar»a< nta an tha x«>ray tuba
tliti
talit«&
aXiociliiiitt
i^a-rptloci
^xiring tha flrat SO
^qra after boalNtfteMKt that 1^1*7 ara far too asBpl«x te
aeexiratalT plot tha ilaoay of If^lvldaal iiUirgla«*
alialnstin
'
a few of thaaa Miarglaa fr^ai
mxn«8 «iXi aasl«t In ma wcmly^imm
t»atci^
iai^ of thm vaXiiaa 9lk&mm
t3n:-ical aiosimffia
%m.
thft
e«aipo#it
al?S(srpt\on
tharafora plots ara
tt^wi^ 19 » ahie!i ta a
abscrptlcm e.<t^ m^ thlB «a:i^X«»
m
ll«iKaiF«r»
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AIIAIIOV
^i^iNi Mo* at
4S
Copp«r absorptloct «ex*« run tfer^ug^ pdjmtyrmmm
lon^ period to Ideatl^ ^tamm m»mrif$Mm with
4«viBg tte
A»^^; h€««v«r ik« r««uXt» have
Tbt
vltfei
i9i0AV7
i>««ii
v«ry laooadlGalve*
§mmmm rm^i9L%toii^%ppmrnntlj tb« •^T Kmr
ths X»Ad Al»»orptloci«» s»X«ink«t» out ttU tbA
twxJSfd
«««lc<ir
six ticur li^M^ar^wmt «*• iMtds en Mtreuria'*
(I
«xld« with f«at aevtretis plit«lDe<l frotc m ItthUmm plum
A chesieml »e|^«rfttlo0 ««• pwrforawd
teatwroo r«««tldfi»
MtfS
ott
^ew7
awsjKunHB«&ta wirw aete on wIX fraetloiui ead
• Mtall port 1^1 of the unseperetwd •«itpX«»
Is the obottloal sep&r«ttani the %i^ wee 41eaolve4
3old end platinua eerrlere were iiOd^d*
in 6 !&«gCl«
tibe
gel4 wee extracted at AuCl^ with ethyl eeetete^ wea weei^ed
with € S«SCI
eitd
^Ifiglns to a
wea added*
plated*
erapcrated*
^11
2 S*H01 w«a added aad after
a eet'ureted eolutlo& ef
B^
Isk
water
The ^old waa preelpltated^ filtered, asd
The metn^jtrr mta preelplteted ae
«ddl&i^ SiiClg is a S«aca»
waelied asd plated,
^be
^^l^
^^l^
^7
WAW f lltered^
rbe exeesa et SaCIg iNNkteed t^'.
platisae ee Uiet It could oe extracted with ethyl eeetste#
The reeldue, efter weahiag the ttliyl aeetete wlt^ e
«Rd ew«9er»tlii^9 wee
with si^r^aiiss*
U^am
lip
$»i^
with ts«^l and |^re<ki^lt«ted
the waablz^e were eweporeted t& a «ateli
^laaa*
43
iL«r«ury tract !(>&
%^^
a.T9 Oays
30 l£lnut««
H«^**
ttad
%^*
Oold fraetion
SO ltiiiut«»
W^
rxatiiKK fr««tiQA (fig«aa)
th» residue
momgllmM.
Mild
thm a&««p«r«t«4 "icrtloo c^av* & w^wf
msr^m timt eauld cot
^hi
(>rek;«ii
do«a«
AXiailam al>«orptloo« run oa tbm
Trftatiofi
S«
ladi«ate el^otroa end point*
ftt
{tn£«pairttted
16 m$/ism
,
othBP So8^«rdbi«iat««
A <m« hcur o€ttita plus alpha boel^ardssQi vaa wi^im
Aiad
tb# product a v^ra saparatad et^aaioalXj*
fha pXatlja^R
fraetloTi ^ava a& activity ef only mt* «ci»&t par saofmd*
Bo daf lalta raaulta W8r9 obtalaad aa te tha paridd ef
t&la aetivit^*
It la pla^^ad te rapaat this a^tpar i£gi»&t
44
8
8
AilAllOV
4$
5
9Mia^ « greater qiumtit? of ^mutsmm
A
mm&9*
Ofi4»
boar
plus X7«& M«v
i;oXd
^^ihmi* l^sMlMur^fiai
7h«r« «as no &atiTity In tbm plmtUaxm truotloci*
^m th« oti#aleiiX ft^paratloa took
pcrio-d •xp«etft^ in
t^
tiut
oa« hourir
aisd
««• ooaolusiv**
Is ordftr t& «ld t» lo#«tiii|^ thA 7d atifoit* ftad
pcriea « geld plus f««t
Irldluat pXu»
!•«
9m\ATim
fros Ir^** l« •jLi>6ot»d«
if plAtli^w ia
iJi
wpmrmt^
^*«««sit it s«&
urn
short««t
pXationm tvitetion «A8 7^ mliuit**^
it 16 o«Il«T*d tiiAt th« «xp«rl0«at
iicur
m&»
1ft*
c«\ttroiu t>««l»ftr4tt»ot 9£iA
t€m^:»ri3mmttt
Jt^^
vllX ^«
eia<l«»
mi
Isx
svQmjm by fm%* •iai»ftioa*
p^lodioAXXjr «sd if && aetlTlty
«i««isii«6 bo ft^^^«
«e
A 2*0 dm^ period «&•
i^tii.li;t*a
liotb tvom
3lns« the tvc stadX« lftotcpd« o£ Ir id lust
6£ ISl
4i&d
pr^toa
tsm^e miiis a»ftb*r»
I^^» an Irldlos protXoai ti*«tire& react iou »hdiiX4
give pletlfiue leotcpee cf tbe
eette
tmo »eee mmtf^rmm
Biimm
there Is eeaeidereble eTl^Senoe t« isidieete ttAt the 4«03
«le7
j^rloi ehould Im eealf^jed the eikse nu&der
J^letlooBi
198 belLov)^ the 2*0
«lth the »ed« nsslMir 191*
ctey
f%ie
1S«^
period vould then go
two dsy s^erlod ie aot
isenerie vltb i-t^^^ mtace It t&ie were the eeae^
«fteaftt
|lllfcS
tii*
of tbe teo day belf-llfe tormm^ is e pletlzuat
17*5 HeT sttHM oeutroci reeatlou ehcul<l &e
elt^ the es&is^ of
tiro ^L^f
(«ee
tite
4 day l:ielf*lire fi^rssed*
parted eere ferasd
reaetlds aeektng
it
eoatpeirei^le
tv?
s&
Irldittis
proton
If the
iii^ao*
em leoner vlth e eteuXe platinim
ieotope of Mftse m^^uaere
1.92
or 194 ti^ere shouXil
eXXy &« in the pXetlnt^ Treetloc Bfm&
tm^e^Xe irldii^ l^oto^
eirefi^ti*
erl^er^iee cf t!\e
at the e«&e »ftee xitsi^^r forsNid
4*7
^
not
til*
K
d*«&y of
csi|FtuT«
2*0 dt&7 p«i*led«
t.h«
thiA
1ft
c:li»««
tj^d
(0«7^} as
194 it mooM.
ooBpturttd «it2i tlwit or
!»•
•icii^ot^d
that ths anoKBkt or 131 f onMd froa * plAtlaiai
gmm&
r^aetloti voul^ b« v^ry scall &a ooii^pftrod with
&ti« aaiotstit
rbis i» V9rUl«4 b^ th* rant that In
199 foratd*
iMmr pltttUmK gJH»a ^m^mi^^mmA thar« 1«
«M1«
day period
ifi
2»0
of
cm«
tli#
41»«#rruibIo tvo
the six hour ^joBSMur^tiint th« tvc <1&7
p«rlo4 is i^ppsrsat o&Iy
'^IM
net
nstttroi^
9>lth
a lo« activity*
dsgr bsilf*»lir«
eoaspsras «lth a 3*00 d<^
half-lirs praviottSlsr raportad In iha lltcf-ratnra for
plstlsoi 1$1 (r6f«X)«
sMainlai this
Ot^r
ictvastigatc^ps haira raportad
lao%-ep« trtm mx* Irldlmi dautartsn %vf> aeatreft
r^aetlofi cad free a pXtttians fioutrctt two n^ntrmi r«aotldi&*
(raf.li*
'97 thfl
XM.S laotc^
liaa
not prnvlcxiMl^
:»aax.
tac BMthods raportad bai*a9
Flx^tlnaa 191 daeaya by I capture •
I
c^taln^
jt-rays bava baaa B^aaa«3*a^«
^iaa appr^ciaataly a 0*0€?
vi^iah dacays alth
*t
L«ad
aM
5oth L and
sllTar abs^^rptloas
Jiav alaatroisagj&^tla
tvc day half^Xifa*
I'hiis
Is
radiation
aii
l&tar*
sadlate ansrgy cf Irldliia K x^r^ya^ and agpraaa vltb r&smlta
ai^^alfi^
tiy
pravl4>as ItiTast Igatcra (raf*X>«
Alstaili^ias
a^&rptSor. isaasu3ra8ia&ta shov alf^ctrfiniagaatia ar^argias of
0*010 ubm a£^ 0«01€
itav
TiM 0»01& Mav la
Ititamadlata ai»rcy of Ir idles L
ati
that daeay altb this parlod*
48
jtL«r&ja*
^iM I#ftd «b»€irptl€^« Also
at»i»«
imifpr ^t9^fjU^, «t « t«o d«7 half«Ilf«*
•IceiroQ^ and vcold jLa^e«t«
ithisi
did not app«*r 1&
irmtm X) r«ports a bard
l«ftdi
ft
1«75
m 0«$9
0mm«
giftasKft
1» la fair
Thla»
Jl#Y
ii«v
Mkftrcir*
ab«orpttoat« ha««ir«r ^iiki!i««R
i^mmoM.
of «i&cat 1«5 si«T«
Th« 0*49 K«v •X««tro& «&l»h d«eays «t » two day
talf*lir« fro& th« ftlusimot absent iesi
««ajBiar#ift#&ta
probably ao latamaX ocA^arslen aXadtroo f^^iAg
Aaaaur«d at 0.S9
itav*
49
alttit
1«
tt»
\
,..
v^
3«
1^
n«tlni23a
K capture
Si«tbod of a^ojij
4*06 day balf*llf« vaa obtained froaa proton
7li«
^KultmrdBttaittt
•116 sss^
masr/^tmB
Qmaasim
of iridltsip 17«5 ^or ^mamA &Qai^*r4»»fit • of
pX«tlJKai» aad f&st neutron
of oirior;*
i»<9Bii»Ar<ln4»£t8
Th»
plAtlsusi 19v posltioa 1» th« only ooe that oould posalbly
IM Arri-?*^ «t froe both ad
•Bd «
jwiiroupx pltt9
•o«Id
^$«
slif^t
lrldii2«4
pins pvatmi r#«etlfm
f*at neutroa ntAotian*
d««^l»t
Iltua tti«r«
that t^« 4*03 d»/ p«i*£od Is
eorrectly loeAt«d*
Tltlft
!mir*Xir« «c«i^ftr#« vltb 4»35 aad 5«& 0mf
bAlf«Ii«os r«pcrt«d for this l«otop«
gftt^ra*
f h«
thrtts
lifte
pr^vlmia i&y««tl»
r««etlon« Xlstod a9Nrv« to o^tAin
pl«tiii£» 1^3 havft not ^«r«G r«p&rte^i
this lAo%«ptt
1»7
lii tbs«
^esa pr»vl<msly obtaJUiAd
fellovio^ ipiM^tlofiS (raf* 1, 2,
literature*
%»7
tbe
IDs
pl«tl£»a»*fi«ati»Qfi*t»o
namtwmk
plet ianie*Kt<iutgi*eii«'prct oa
Irldltsse-^aeutfrrcm^tiio
oeutroa
lJridli»B«^lpbft«pr€ti3r« t»c^ »»utrc»i
m
W
MMk4
mb^CiX'i^t
l^im
^v#
1*07 M99 £ma&^ »^JLoa a«e«9 %t *
«*«ftttr«M»ata «bo« tiMit ^oth
P
»»pOtoaittg t«
lldQft
ikX»%^
Q*Xl4£
k#v
Um
I«
jMa4
kk^9
^mmm
mod m
fi»ia«
tb»«« «iii»^l«» «r«
ojT
jL^ruy oi
^%rm A U«XX4
0*^
iouit u«sr rttv-^*
S x*r«y of iriA&lutt iauieatii^
%lv»
—
«
(iwett?^
irliliiau
fry
IC
eap^tyre*
«au«imai *&«<^p*
ft«v t^eta ^tMH^gy 4«e«;yifig «!t
m
ib* ^•Xl'S &«v vaX\)«« pr«rl<»&«Xjr r6^cTt«4*
^b« X«5 ^«v g««w* r«pert«<i
teijr
»lXkla«oe <r«X«X> was aot
Si
7^
Balf *Iif»
•r(Ss#x^s ot «i«rcujr9r*
work 4oa* 00
%bm
pr«tPloudi
4Hiiia
lfidi^aoXualv»*
*a
AGt^vlt^
'i:i:;^i^
llil*
hftViuiv ^MMii o^tAic»«a
taij(
ii&» ikX««
9e«a y«pert«d
cklutitft* JsiAfw b«4Mi
(i^^f
reported b7
0«^7
ID*
^^ 4t S»
«til^ d««ftf«d At a^pioxiitfttAl^ « 7S
ihl9 «0fl9»r«« «ith th«
hftXr»Xife«
If^eai&pXftl**
hy plAtii£y«^ <24rut«r^^ protest a&d
th* «wu\e &eib&a« in ch« llt«raitur«
.^«v
^«<^ p«'«iv loudly i»<k2u
ic&toj^ im^
activity
wAaaA^9f 70 w^ms^m^ moA C7
of d*5X
iilxuaitaii
«liii2i«
gMu^
^«v
7«|>is2'i«d
la ib« Xitu2^fttui*«•
AXuftifMtHi a^tMiorptloe ad4fcSii^«««&t»
«& •X«0tren df X«4a
li«ir
thin
htes
:£«»i
^Iv*
*ttrll^tii^X« to t^is aotlrlt^*
£)••& r#portftd prevlciu»X^»
foft
2€0
dXe^trons *^^«^rt«4
^iSk fL»t l£tir«raftX eou^ysrftloi^
K«ir
t»7
msA
^$»X*
(ref* XX) ««r» &$t 4»t«ct«4»
^^
mrnrnm taasssi^r
ldiotop€ a^^MjUx^
$a^ tt^ ter^ ^t 4m^9^ ef
miXh tbi*
.^«.Xr«XlX« Is &tXXX
53
tiift
ia 4«^di«,
9w
Flfttlrmsi
19?
«iMr£lea o»ea
Kle«ft4roA
1^
p!UtiaDK -aaama
80
h'jsjo'
hftlfoXli'«
Ir;
wad a^&ls^Kl
bj"
th« ll:u.-ature {f^f S, 1D)»
••cti oAae
ho»er«* ih© wcric dca« oo tbl» activity
rtatohy.
?ht» a©tlTlt;r
XHMictloaa {r9t 6, 7# S;
also report ad ay
"sfs-i
^•it»vii*UK<
;
platltma zMutr^a t«o neutror^^
*'» 19»5 benir half-life Is
«id 10
i20ur
^aemm
fast neutron r^A^tlmui* &oth
ftsd aHMPOiirx
Of mhttih u:a reported
'-'«ir
^»
»ft«
la
vary
rolle«tag
i^outeroa proton^
azKi platlaxts
neutren
s»soi^tiit s«"««t«r
gaaasft*
th«& tb» 17»5
riKur^a r^portod Xq tho literature*
AluBlstKs absorpticm ««asur«i»eats a2io« a 0*$^ £«v
Uata ^ftargy
i^l^
decays «ltb a 20 hmir hall-llf«,
coBpares vltb th« 0«65« 0«72« and 0*54
r«pa^a^*
Tha a«,60
llt«>rats2r« witt
M--5y
garis;?^*
Hisv
values proirioyaly
ftaergy raportad la t£ai
ust datectad*
53
Thla
I
»6 days
Smlt^llAt
««th»d of
S»t«
(teoftT
jCl^ttijp^ia •imnrl'Sii
!%• 6B day h»lf-llfe
g«— t » r
li
ll«ir
th# ^*a»«««
Tfeln parf<v<l
•«» j>i*«¥!wialy rapertad
r-eao^tien (r^f 6)«
to which thla aottTlty hmltm^n la net
aliopilmup ai>aciT^lQ4i
a2 day
aaaa^ra?^nta
«»ftly tiy
ilia isaaa
mss^Mr
trail fiica^ he*«tr«r
<;tva i^iata anargi<9a cf
•4« an£ .dl^ ^mw ^•amfUi^Si »ith & halr«»lifa
c^f
al^out 81
Laad al^aorpiiofi flsaann'attasta glva a x^a^wa mtisi^^
ar OaI^? Mav
amah
daaaya
vltfe
JiaUhar the 0«05, and 0.21
«r tha •lb
«ri:J
•57 !!«
Au'"^.
This
is
a hair<i»lira of €1 daya*
i^»» ^ai»?fi«
?:a«ira»
datactad alth eartainty.
to
t!>e
by tha i»<itron tlnm pr^tumt ratbor thaa
a pl^tima! sXov noutFoc
days*
by « «»rcury
vats o»>t«1-rwKl
i* b«ll9v«d that in th« latter e«ii«
par1<>d 1» prodtt<»#d
l>y
0,45
F\
evideace thoi
aaalgnaa to Aa^^,
aaol^i^d tc
0.32
Tt''*'^
S4
MeV beta
%^^* wara
rs
(iecajs into
OSSigned
fla'^^^J
2.
3»
.*'harsic*l
\v»i*«l Kmvlew TJ, 153C,
a,
Pr-sc
;««^
9»
r-*ce
'.:y7
10«
74, 601, «a«m1«vlliv.,
'i«Tl«i«
PhU
3o«,
^
liaok,
422,
.oh*r^|f K^l^ghion*
F«gg» fob In.
««(14«I«
Xi'i8iiri*r»,
Mahsai.
3oo A 3>^ ^ 521 aai 333
uiratlasi ?hyslc« Acta 2^, 2^X>, %ffl«r,
11,
iiTklv "%t
12.
IttiA-^tlj ar t^je
atrtx-.
'^alk 56A, |9, H'^lo,
^Jui-;.-rle»fi
?H7»lo«l 3««l«l»y
m
Hir2«U
Wlthm^t tbm aaslstftnee mod eooperatloA of
MAX
to
persons this wtsrk eo\yX^ n^ve^r h«v« b««ii eftrrl«4
It 8
present «t«t«*
tewerd *>.
8fr»
Pfcul
ftf«L»
Pc^ol
"
doep lni«bt*<3ne»ii la felt
for hl» advice end forbearance*
neliar and other pereonnel on the nhlo State
Oyelotron were Indl^penaable*
irs. ^ldclfo*a timely
preparation of tercets for eycl'^tron iKmbarttnente and
her driving perserrauoe la obtain lij<^ end repltkOin^ worn
part a in
7arlo>;!8 Iter^ra
of the eqnlpmeet need le apprsoliited,
?he asaletartoe of I^* bowler » and the eo^eratlon of other
peraoriiael at the Oak
'i9
»ii\)ait
^id$e La^orat«?rie8 ime vital*
thle p«per with a feeling of gratltt-sde
toward tooee «e hATe worked witr^*
m
OCT
J
2
BINOCRY
18032
Thesis
B806
m»2
Bri^e
The unstable isotopes
of platinum.
BINOCRV
5)©o6
C-7~
i>ie
unstable ieotopes of
olatinum.
Library
U. S. Naval Po«itgraduate School
Monterey, California
MlB lllllllliyiyy illiyiliyiliym
7
8
9
10
11
III
iGON RULE CO
1
i|i
i|i|i|i
U.S.A,
i|i
2
III
iliFFWFFIW WF
3
'
4