Cross-section fluctuations in theMg24,C12scatterings at high incident energy

1982 ◽  
Vol 25 (5) ◽  
pp. 2815-2818 ◽  
Author(s):  
M. C. Mermaz ◽  
A. Greiner ◽  
M. LeVine ◽  
F. Jundt ◽  
J. -P. Coffin ◽  
...  
Keyword(s):  
Cross Section ◽  
Incident Energy ◽  
High Incident Energy

scholarly journals THE SUCCESS OF THE DISTORTED WAVE METHOD AT VERY HIGH INCIDENT ENERGY

1986 ◽  
Vol 47 (C4) ◽  
pp. C4-179-C4-182
Author(s):  
J. BARRETTE ◽  
B. BERTHIER ◽  
J. GASTEBOIS ◽  
A. GILLIBERT ◽  
R. LUCAS ◽  
...  
Keyword(s):  
Incident Energy ◽  
Wave Method ◽  
Distorted Wave ◽  
High Incident Energy ◽  
Distorted Wave Method ◽  
Very High

scholarly journals Dissociative Recombination of CH+ Molecular Ion Induced by Very Low Energy Electrons

Atoms ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 82 ◽  
Author(s):  
Zsolt J. Mezei ◽  
Michel D. Epée Epée ◽  
Ousmanou Motapon ◽  
Ioan F. Schneider
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Incident Energy ◽  
Dissociative Recombination ◽  
Boltzmann Distribution ◽  
Rate Coefficients ◽  
Rotational States ◽  
Low Energy Electrons ◽  
Quantum Defect Theory ◽  
Π State

We used the multichannel quantum defect theory to compute cross sections and rate coefficients for the dissociative recombination of CH + initially in its lowest vibrational level v i + = 0 with electrons of incident energy below 0.2 eV. We have focused on the contribution of the 2 2 Π state which is the main dissociative recombination route at low collision energies. The final cross section is obtained by averaging the relevant initial rotational states ( N i + = 0 , ⋯ , 10 ) with a 300 K Boltzmann distribution. The Maxwell isotropic rate coefficients for dissociative recombination are also calculated for different initial rotational states and for electronic temperatures up to a few hundred Kelvins. Our results are compared to storage-ring measurements.

Polarisation et mesures de section efficace dans la réaction 9Be(3He, p)11B

1983 ◽  
Vol 61 (12) ◽  
pp. 1609-1612 ◽  
Author(s):  
J. Pouliot ◽  
R. Roy ◽  
P. Bricault ◽  
L. Potvin ◽  
R. J. Slobodrian
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Differential Cross ◽  
Incident Energy ◽  
Section Efficace ◽  
Proton Polarization ◽  
Analyzing Powers ◽  
Nonuniform Illumination ◽  
Precise Knowledge ◽  
Correct Calculation

New measurements of the differential cross section have been carried out in the reaction 9Be(3He, p)11B between 13.0- and 14.2-MeV incident energy. In order to compute the effective analyzing powers of polarimeters used to measure proton polarization in the same reaction, a precise knowledge of angular variations is necessary. The achieved accuracy allows a correct calculation of the false asymmetry caused by nonuniform illumination of the analyser from cross section variations.

A Study on the New Empirical Cross Section Formulae for (γ, p) Reactions at 20 ± 1 MeV Incident Energy

2018 ◽  
Vol 37 (5) ◽  
pp. 270-274 ◽  
Author(s):  
E. Tel ◽  
Y. Kavun ◽  
M. Sahan ◽  
A. Aydin
Keyword(s):  
Cross Section ◽  
Incident Energy

Atomistic Mechanism of Ion Beam Deposition Induced Curvature Formation in Thin-Films

2007 ◽  
Author(s):  
Sachin S. Terdalkar ◽  
Sulin Zhang ◽  
Joseph J. Rencis
Keyword(s):  
Kinetic Energy ◽  
Incident Energy ◽  
Ion Beam ◽  
Md Simulations ◽  
Stress Generation ◽  
Intrinsic Stress ◽  
Graphene Sheets ◽  
High Incident Energy ◽  
Upward Deflection ◽  
Generation Mechanisms

Molecular dynamics (MD) simulations are performed to study the stress generation mechanisms in cantilever graphene sheets impacted by energetic carbon neutrals. The carbon-carbon interactions are described by the Tersoff-Brenner potential [1]. The MD simulations show that the free-end deflection of the graphene sheets is strongly dependent on the kinetic energy of the incident ions. At low incident energy (<<10eV), the free end bends towards to the side on which ions are deposited (upward deflection); at high incident energy, the free end bends away from the side on which the ions are deposited (downward deflection). The downward deflection reaches its maximum at around 50 eV, beyond which the downward deflection decreases with increasing incident energies. In addition, the evolution of the free-end deflection in terms of the number of deposited atoms is also dependent on the kinetic energy of the incident ions. These numerical observations suggest that intrinsic stress of different levels in the graphene sheets is generated. A close examination of the microstructures of the grown films indicates that the generated stress can be attributed to a competing mechanism of the production and annihilation of vacancy-like and interstitial-like defects in the films.

scholarly journals The scattering of alpha particles by helium

1959 ◽  
Vol 251 (1265) ◽  
pp. 143-155 ◽  
Keyword(s):  
Elastic Scattering ◽  
Phase Shift ◽  
Differential Cross Section ◽  
Excitation Energy ◽  
Cross Section ◽  
Differential Cross ◽  
Incident Energy ◽  
Phase Shifts ◽  
Alpha Particles

In order to obtain information about the levels of even spin and parity of 8 Be at energies above 11 MeV, the differential cross-section for the α-particle-helium elastic scattering has been measured at a series of beam energies from 23·1 to 38·4 MeV, for many c.m.s. angles between 30 and 90°. Phase shifts up to L = 8 have been calculated for each energy. Combining these results with previous figures for lower energies, the phase shifts δ 0 , δ 2 and δ 4 are thus known as functions of incident energy from 0·15 MeV to 38·4 MeV. The behaviour of the phase shift δ 4 confirms the existence of a previously suggested level with I = 4 at an excitation energy of about 11·4 MeV in 8 Be. The phase shifts δ 6 and δ 8 are small, as expected if the rotational series of levels in 8 Be term inates with I = 4.

Scattering of High-Incident-Energy Kr and Xe from Ice: Evidence that a Major Channel Involves Penetration into the Bulk

2012 ◽  
Vol 116 (27) ◽  
pp. 14264-14273 ◽  
Author(s):  
K. D. Gibson ◽  
Daniel R. Killelea ◽  
Hanqiu Yuan ◽  
James S. Becker ◽  
Subha Pratihar ◽  
...  
Keyword(s):  
Incident Energy ◽  
High Incident Energy
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