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Proton-beam stopping in hydrogen

Journal Article · · Physical Review A
 [1];  [2];  [2];  [2];  [3]
  1. Curtin Univ., Perth, WA (Australia); DOE/OSTI
  2. Curtin Univ., Perth, WA (Australia)
  3. Texas A & M Univ., College Station, TX (United States)
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The stopping cross section for protons passing through hydrogen is calculated for the energy range between 10 keV and 3 MeV. Both the positive and neutral charge states of the projectile are accounted for. The two-center convergent close-coupling method is used to model proton collisions with hydrogen. In this approach, electron-capture channels are explicitly included by expanding the scattering wave function in a basis of both target and projectile pseudostates. Hydrogen collisions with hydrogen are modeled using two methods: the single-center convergent close-coupling approach is used for the calculation of one-electron processes, while two-electron processes are calculated using the Born approximation. The aforementioned approaches are also applied to the calculation of the charge-state fractions. Furthermore, these are then used to combine the proton-hydrogen and hydrogen-hydrogen stopping cross sections to yield the total stopping cross section for protons passing through hydrogen.

Research Organization:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC); U.S. National Science Foundation; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
FG02-93ER40773; NA0003841
OSTI ID:
1610248
Alternate ID(s):
OSTI ID: 1504547
Journal Information:
Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 99; ISSN PLRAAN; ISSN 2469-9926
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Figures / Tables (9)

FIG. 1(p. 9)figure FIG. 1
FIG. 2(p. 9)figure FIG. 2
FIG. 3(p. 9)figure FIG. 3
FIG. 4(p. 10)figure FIG. 4
FIG. 5(p. 11)figure FIG. 5
FIG. 6(p. 11)figure FIG. 6
FIG. 7(p. 11)figure FIG. 7
FIG. 8(p. 12)figure FIG. 8
FIG. 9(p. 12)figure FIG. 9

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Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
Schroedinger equation
atomic & molecular collisions
atoms
charge-transfer collisions
ions
optics
physics
semiclassical methods