scholarly journals Stopping power of fission fragments in thin Mylar and nickel foils

Author(s):  
T. Materna ◽  
E. Berthoumieux ◽  
Q. Deshayes ◽  
D. Doré ◽  
M. Kebbiri ◽  
...  
1984 ◽  
Vol 52 (3) ◽  
pp. 234-237
Author(s):  
D. Desmarais ◽  
J. L. Duggan ◽  
H. L. Adair

1946 ◽  
Vol 70 (11-12) ◽  
pp. 808-811 ◽  
Author(s):  
E. Segré ◽  
C. Wiegand

1953 ◽  
Vol 31 (1) ◽  
pp. 78-96 ◽  
Author(s):  
Pierre Demers

Measurements on the range of the tracks of fission fragments recorded in special laboratory-made emulsions are reported. The origin was marked so that observations on length not possible otherwise were made. Stopping power and straggling for such tracks in different media are discussed. It is shown, that the range of one fragment is little dependent on the range of the other paired fragment. The blackening of the two tracks near the origin is on the average unequal, that of the light fragment L being darker. It is inferred that ionization is greater near the origin for the L fragment. Knock-on protons allow a range velocity curve to be drawn, and evidence is advanced to prove that the light associated particles are indeed knock-on protons.


Author(s):  
Kin Lam

The energy of moving ions in solid is dependent on the electronic density as well as the atomic structural properties of the target material. These factors contribute to the observable effects in polycrystalline material using the scanning ion microscope. Here we outline a method to investigate the dependence of low velocity proton stopping on interatomic distances and orientations.The interaction of charged particles with atoms in the frame work of the Fermi gas model was proposed by Lindhard. For a system of atoms, the electronic Lindhard stopping power can be generalized to the formwhere the stopping power function is defined as


Author(s):  
David C. Joy ◽  
Suichu Luo ◽  
John R. Dunlap ◽  
Dick Williams ◽  
Siqi Cao

In Physics, Chemistry, Materials Science, Biology and Medicine, it is very important to have accurate information about the stopping power of various media for electrons, that is the average energy loss per unit pathlength due to inelastic Coulomb collisions with atomic electrons of the specimen along their trajectories. Techniques such as photoemission spectroscopy, Auger electron spectroscopy, and electron energy loss spectroscopy have been used in the measurements of electron-solid interaction. In this paper we present a comprehensive technique which combines experimental and theoretical work to determine the electron stopping power for various materials by electron energy loss spectroscopy (EELS ). As an example, we measured stopping power for Si, C, and their compound SiC. The method, results and discussion are described briefly as below.The stopping power calculation is based on the modified Bethe formula at low energy:where Neff and Ieff are the effective values of the mean ionization potential, and the number of electrons participating in the process respectively. Neff and Ieff can be obtained from the sum rule relations as we discussed before3 using the energy loss function Im(−1/ε).


1983 ◽  
Vol 44 (C8) ◽  
pp. C8-39-C8-66 ◽  
Author(s):  
T. A. Mehlhorn ◽  
J. M. Peek ◽  
E. J. McGuire ◽  
J. N. Olsen ◽  
F. C. Young

2020 ◽  
Vol 227 ◽  
pp. 02012
Author(s):  
R. S. Sidhu ◽  
R. J. Chen ◽  
Yu. A Litvinov ◽  
Y. H. Zhang ◽  

The re-analysis of experimental data on mass measurements of ura- nium fission products obtained at the ESR in 2002 is discussed. State-of-the-art data analysis procedures developed for such measurements are employed.


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