Excitation of helium to the n=2 states in intermediate energy H{sup {minus}} + He collisions
- Univ. of Toledo, OH (United States)
- Albion College, MI (United States)
The first measurements and calculations of excitation of helium to the n=2 states by H{sup {minus}} impact are reported. The experimental method that was employed in these measurements was Ion Energy-Loss Spectroscopy which resulted in absolute cross section determinations. A H{sup {minus}} ion beam was accelerated into a gas target cell containing helium and the scattered H{sup {minus}} beam was magnetically separated from the other charge state components of the emerging projectile beam and directed into an energy analyzer in the decelerator terminal. The potential placed on the accelerator was varied to produce the energy-loss spectra. These spectra were analyzed in order to deduce the cross section values. Cross section predictions using the VPSA model, with explicit allowance for the internal structure of H{sup {minus}}, are also reported and will be compared to the experimentally determined cross sections.
- OSTI ID:
- 394165
- Report Number(s):
- CONF-9605105-; ISSN 0003-0503; TRN: 96:028830
- Journal Information:
- Bulletin of the American Physical Society, Vol. 41, Issue 3; Conference: 27. annual meeting of the Division of Atomic, Molecular and Optical Physics (DAMOP) of the American Physical Society (APS), Ann Arbor, MI (United States), 15-18 May 1996; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
K-shell x-ray production cross-sections in carbon, oxygen, fluorine, sodium, magnesium, and aluminum by 0. 5 to 8. 0 MeV protons, helium, and lithium ions
Absolute total and one- and two-electron transfer cross sections for Ar[sup [ital q]+] (8[le][ital q][le]16) on He and H[sub 2] at 2. 3[ital q] keV