982(208Tl)
Table of Contents
(208Tl)
583
860
1679(212Bi)
(212Pb)
763
(208Tl)
821(208Tl)/sum(238+583)
bkg.
238
748(208Tl)
(212Pb)
/ann. rad.
705(208Tl)
722(208Tl)
650(208Tl)
bkg.
240
587(208Tl)
bkg.
(224Ra)
549(220Rn)
bkg.
473(212Bi)
485(212Bi)
493(212Bi)
300(212Pb)
277(208Tl)
} Bi K x-rays
DE
1512( Bi)
212
288(212Bi)
252(208Tl)
328(212Bi)
bkg.
Pb Kα2
166(228Th)
176(212Pb)
205(228Th)
211(208Tl)
215(228Th)
233(208Tl)
433(212Bi)
452(212Bi)
bkg.
1282(208Tl)
1160(208Tl)
bkg.
1185(208Tl)
1078(212Bi)
1093(208Tl)
1073(212Bi)
1004(208Tl)
SE
bkg.
115(212Pb)
129
131(228Th)
39(212Bi)
57
952(212Bi)
893(212Bi)
bkg.
927(208Tl)
883(208Tl)
Page -1232
in secular equilibrium
5-3-2000 thru 5-8-2000
HPGe: 82 mm dia. x 83mm
0.025 cm Stainless
30cm
A4050300008
low energy portion
U (68.9 yr.)
510
(212Bi)
727
(212Bi)
785
(208Tl)
1620
212
( Bi)
Page -2
232
U (68.9 yr.)
in secular equilibrium
5-3-2000 thru 5-8-2000
HPGe: 82 mm dia. x 83mm
0.025 cm Stainless
30cm
A4050300008
high energy portion
2614
(208Tl)
SE
2610
sum(583 + 2614)
sum(763 + 2614)
sum(ann. rad. + 2614)
sum(277 + 2614)
random sum(K x-rays + 2614)
1806(212Bi)
bkg.
sum(252 + 2614)
(212Po)
Table of Contents
Page -3232
232
U Decay Chain
232
U (68.9 yr.) Decay Scheme
U (68 yr.)
4.8x10-5-5
5.1x10
0.00616
186.828
0.30 (0.164 ns)
57.762
31.55 (0.406 ns)
Based on 3/17/2000 NNDC/BNL Data
Pb (10.64 hr.)
b- decay
212
Bi (60.55 min.)
35.94% a decay
208
b- decay
208
64.06% b- decay
212
Tl (3.053 min.)
129.08
270.2
228
90
Th
0.0
1.9116 yr.
-5
68.15
GAMMA-RAY ENERGIES AND INTENSITIES
Nuclide:
a decay
212
332.3
0+
Po (0.145 sec.)
57.78
2+
327.9
Rn (55.6 sec.)
503.6
36+
1-
141.0
396.085
378.178
328.003
478
5.6x10
4+
a decay
216
519.199
338.1
209.5
191.0
220
5-
773.4
a decay
3.9x10-5
2.1x10
831
Ra (3.66 day)
-6
874.48
831.832
547
a decay
224
U
2+
0+
817
Th (1.9116 yr.)
0.0
232
92
Q =5413.63
a decay
228
68.9 yr.
0+
Po (0.299 sec.)
a decay
232U
Half Life: 68.9(4)
Eγ (keV)
σ Eγ
Q
R
57.78
129.08
141.0
191.0
209.5
270.2
327.9
332.3
338.1
478
503.6
547
773.4
817
831
0.05
0.05
0.5
0.2
0.5
0.2
0.2
0.3
0.2
1
0.3
1
0.5
1
0.199 9
0.068 2
0.000 003 1
0.000 031
0.000 010 6
0.003 16
0.002 83
0.000 049
0.000 037 0
0.000 001 4
0.000 014 5
0.000 001 0
0.000 004 7
0.000 000 8
EO
0.001 8
0.000 4
0.000 001 3
0.000 003
0.000 002 6
0.000 05
0.000 06
0.000 003
0.000 001 3
0.000 000 5
0.000 000 8
0.000 000 6
0.000 000 8
≈
Iγ
σIγ
Eγ, σEγ, Iγ, σIγ, Levels from ENSDF Database as of August 31, 1999
Level
57.762
186.828
519.199
378.178
396.085
328.003
328.003
519.199
396.085
874.48
831.832
874.48
831.832
874.48
831.832
Q These Iγ are per 100 Decays of 232U
R Normalization factor is 0.00259, and its uncertainty is taken to be 0.0.
Pb (stable)
Table of Contents
yr.
α
α
α
α
α
α
α
α
α
α
α
α
α
α
α