Effect of the Secondary Charged-Particle Spectrum on Cellular Response to Fast Neutrons

1974 ◽  
Vol 58 (1) ◽  
pp. 111 ◽  
Author(s):  
D. K. Bewley ◽  
N. J. McNally ◽  
B. C. Page
2015 ◽  
Vol 46 (3) ◽  
pp. 709
Author(s):  
S.E.A. Orrigo ◽  
B. Rubio ◽  
Y. Fujita ◽  
B. Blank ◽  
W. Gelletly ◽  
...  

1984 ◽  
Vol 2 (2) ◽  
pp. 201-211 ◽  
Author(s):  
A. K. Chung ◽  
M. A. Prelas

A novel method of utilizing fluorescence generated from the products of nuclear reactions offers the prospect of compact, high efficiency, multi-megajoule lasers. To overcome the problems associated with traditional laser (or energy converter)-fissile material interfaces, such as a uranium coating (low power density and low efficiency) or a gaseous uranium compound (low power density and deleterious effects on the laser kinetics and photon transport), a method suggested elsewhere of employing a reactor using a uranium aerosol fuel, interspersed with a fluorescer medium, is briefly reviewed. The charged particles produced by nuclear reactions in the fuel produce fluorescence in the core region of the reactor, through interactions with the fluorescer. This fluorescence can then be concentrated, to increase the effective power density in the laser medium, and used to drive a photolytic laser.One key issue in the above process is the charged particle spectrum from the fissile aerosol. These issues can be addressed theoretically based on the Dirac chord length distribution technique and an Arcen's function. The charged particle spectrum from a UO2 coating has been generated and benchmarked with the experimental data of Kahn et al., and Redmond et al. Agreement is generally good except near the end of the fission fragment tracks. The validity of this simple technique in approximating the rate of ion energy loss lends confidence to the generation of fission fragment spectra for other geometries (i.e. spherical in which transport efficiencies of over 60% appear achievable) using U, UO2 and U3O8. Work is also extended to the case of B-10 in a variety of configurations which are frequently used in modern energy conversion experimental devices.


1979 ◽  
Vol 20 (5) ◽  
pp. 1873-1877 ◽  
Author(s):  
K. S. Krane ◽  
T. C. Sharma ◽  
L. W. Swenson ◽  
D. K. McDaniels ◽  
P. Varghese ◽  
...  

2018 ◽  
Vol 27 (02) ◽  
pp. 1850014 ◽  
Author(s):  
K. Wang ◽  
D. Q. Fang ◽  
Y. T. Wang ◽  
X. X. Xu ◽  
L. J. Sun ◽  
...  

The [Formula: see text]-delayed particle emission from the exotic nucleus [Formula: see text]Si has been studied using a detection system with silicon array and clover-type high-purity germanium (HPGe) detectors. The [Formula: see text]-delayed charged-particle spectrum and [Formula: see text]-ray spectrum were identified. The half-life of [Formula: see text]Si has been determined. A new [Formula: see text]-delayed proton branch with an energy of 3811[Formula: see text]keV was observed. The [Formula: see text]-delayed two-proton emission was confirmed.


Author(s):  
А.С. Пузанов ◽  
С.В. Оболенский ◽  
В.А. Козлов

Based on the Monte Carlo algorithm, a method has been developed for calculating the energy spectrum of hot nonequilibrium electrons and holes in the track of the primary recoil atom when exposed to single fast neutrons. The calculations of the heating and subsequent relaxation of nonequilibrium charge carriers in silicon in the track of a charged particle with initial energies in the range of 50...200 keV are carried out. The characteristic temperatures of the electron and hole plasma were obtained, which amounted to 5400 K and 2700 K, respectively. The effect of radiation-induced heating of charge carriers on the failure stability of static memory elements is discussed.


2020 ◽  
Vol 35 (21) ◽  
pp. 2050177
Author(s):  
Hua Zheng ◽  
Xiangrong Zhu ◽  
Lilin Zhu ◽  
Aldo Bonasera

We investigate the charged particle spectra produced in the heavy-ion collisions at nine centralities from different systems, i.e. [Formula: see text] at [Formula: see text] TeV and 5.02 TeV as well as [Formula: see text] at [Formula: see text] TeV, at Large Hadron Collider (LHC) using one empirical formula inspired by the stationary solution of the Fokker-Planck equation, dubbed as the generalized Fokker-Planck solution (GFPS). Our results show that the GFPS can reproduce the experimental particle spectrum up to transverse momentum [Formula: see text] about 45 GeV/c with the maximum discrepancy 30% covering 10 orders of magnitude. The discrepancy between the data and the results from the GFPS decreases to 15% when the maximum of the charged particle transverse momentum is cut to 20 GeV/c. We confirmed that the Tsallis distribution derived from the non-extensive statistics, which can reproduce the particle spectra produced in small collision systems, such as [Formula: see text], up to few hundreds GeV/c, can only apply to systematically study the particle spectra up to 8 GeV/c in [Formula: see text] collisions at LHC, as pointed out in the study of identified particle spectra in [Formula: see text] collisions at [Formula: see text] TeV. A brief discussion on GFPS is also given.


2002 ◽  
Vol 39 (sup2) ◽  
pp. 354-357
Author(s):  
Erwin Raeymackers ◽  
Isabelle Slypen ◽  
Sylvie Benck ◽  
Jean-Pierre Meulders ◽  
Ninel Nica ◽  
...  

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