G. Golovin, D. Uryupina, R.Volkov, and A. Savel’ev
Faculty of Physics and International Laser Center of
Lomonosov Moscow State University
Moscow, Russia
Is a table-top instrument for nuclear physics real?
I  1017 W cm 2
  800 nm
  50 fs
 15 keV
E (57Fe)  14.4 keV
1
 15 keV
E (169Tm)  8.4 keV
E (181Ta)  6.2 keV
 MeV
0




Simple
Low-cost
3-in-1: electrons, ions, and radiation
Direct excitation of low-laying nuclear levels
Excite nuclei with the help of plasma, created by
the powerful fs-laser impulse, and detect its
deexcitation.
Shell
Bond energy, eV
Nucleus
0
K1
7179
L1
883
L2
758
L3
744
M1
116
M2
79
M3
73
M4
17
M5
16
N1
7
Atom
4
7,2 keV
Amplitude (a. u.)
57Fe
3
2
1
0
1
14,4 keV
6
8
10
12
Energy (keV)
14
W  2 mJ ,
  50 fs,
  0.8 mkm,
I  1017 W cm 2
H 1
O1
C 1 , C 2 
Fe1  Fe8
Signal from MKP
Electron current (W=const)
e,γ
mean W
 26 keV
q
plasma
creation
p
+
Fe2
Fe3+
Fe1+
Electrons per shot
0,05
0,04
0,03
0,02
0,01
12
13
14
15
Energy (keV)
Electrons per shot
0,030
0,025
0,020
0,015
0,010
0,005
6
8
10
12
Energy (keV)
14
16
Atom
57Fe
Nucleus
0,8 keV
7,2 keV
14,4 keV
Conversional deexcitation of 14.4 keV 57Fe
nuclear state excited with the help of plasma
created by the powerful femtosecond laser
pulse was detected.
Thank you for attention