scholarly journals Initial electron energy spectra in water irradiated by photons with energies to 1 GeV

1984 ◽  
Author(s):  
A. S. Todo ◽  
G. Hiromoto ◽  
J. E. Turner ◽  
R. N. Hamm ◽  
H. A. Wright
2016 ◽  
Vol 30 (26) ◽  
pp. 1650196 ◽  
Author(s):  
Zheng Li ◽  
Hailong Wang ◽  
Li Chen ◽  
Sha Chen ◽  
Qian Gong

Within the framework of effective mass approximation, the scattering rate via longitudinal optical (LO) phonon emission for an electron and the mean scattering rate via LO phonons emission for electrons initially in the first excited sub-band and finally in the ground sub-band in [Formula: see text] stepped quantum well (QW) is calculated adopting the shooting method and Fermi’s golden rule. The results show that the scattering rate and the mean scattering rate are highly dependent on alloy compositions, well width, initial electron energy, electron temperature and sub-band separation [Formula: see text] between the ground sub-band and the first excited sub-band. When [Formula: see text] is larger than the LO phonon energy, the scattering rate and the mean scattering rate increases with increasing Ga composition, decreasing As composition and increasing well width. However, when [Formula: see text] is smaller than the LO phonon energy, its change tendency is contrary. The scattering rate increases with decreasing initial electron energy if the separation between the initial electron energy and the ground state energy [Formula: see text] is not smaller than the LO phonon energy. The scattering rate and the mean scattering rate increases with rising electron temperature. The mean scattering rate reaches the maximum value when [Formula: see text] is equal to the LO phonon energy. The interruption in the scattering rate happens when the separation between the initial electron energy and [Formula: see text] is smaller than the LO phonon energy. The rapid decrease of the mean scattering rate happens when [Formula: see text] is smaller than the LO phonon energy if [Formula: see text] continues decreasing. In addition, both the scattering rate and the mean scattering rate show little change with different stepped layer widths.


2000 ◽  
Vol 45 (4) ◽  
pp. 476-479 ◽  
Author(s):  
N. P. Venediktov ◽  
M. Yu. Glyavin ◽  
A. L. Goldenberg ◽  
V. E. Zapevalov ◽  
A. N. Kuftin ◽  
...  

2008 ◽  
Vol 26 (3) ◽  
pp. 363-369 ◽  
Author(s):  
K.P. Singh ◽  
H.K. Malik

AbstractElectron acceleration by a chirped laser pulse in an azimuthal magnetic field in a plasma has been studied. The betatron resonance saturates and the electrons start losing energy beyond a specific point of time without a frequency chirp. The resonance can be maintained for a longer duration and the energy of the electrons can be enhanced if a suitable frequency chirp is introduced. The duration of interaction increases for a lower plasma density or a lower initial electron energy which causes increase in the electron energy gain. The value of magnetic field required for resonance increases with an increase in plasma density and with a decrease in initial electron energy.


2021 ◽  
Author(s):  
Habtamu W. Tesfaw ◽  
Ilkka I. Virtanen ◽  
Anita T. Aikio ◽  
Amore' Elsje Nel ◽  
Michael Kosch ◽  
...  

2002 ◽  
Vol 101 (3) ◽  
pp. 337-346 ◽  
Author(s):  
J.L. Chaloupka ◽  
R. Lafon ◽  
J. Rudati ◽  
B. Sheehy ◽  
P. Agostini ◽  
...  

2016 ◽  
Vol 93 (4) ◽  
Author(s):  
O. Culfa ◽  
G. J. Tallents ◽  
A. K. Rossall ◽  
E. Wagenaars ◽  
C. P. Ridgers ◽  
...  

1975 ◽  
Vol 275 (3) ◽  
pp. 229-233 ◽  
Author(s):  
F. Folkmann ◽  
K. O. Groeneveld ◽  
R. Mann ◽  
G. Nolte ◽  
S. Schumann ◽  
...  

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