Rational function fits to the nonresonant elastic differential cross sections (DCS) for e + He collisions, 0[degrees]-180[degrees], 0. 1 to 1000 eV

Journal Article · Tue Sep 01 04:00:00 EDT 1992 · Atomic Data and Nuclear Data Tables; (United States)

DOI:https://doi.org/10.1016/0092-640X(92)90008-6· OSTI ID:6960800

Boesten, L; Tanaka, H ^[1]

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1. Sophia Univ., Tokyo (Japan)

Rational function fits are calculated for a representative set of elastic, nonresonant e + He differential cross sections (DCS) comprising: (1) the variation DCS of Nesbet (Phys. Rev. A 20, 58, 1979; 0.1-14 eV), (2) the eikonal DCS of Byron and Joachain (Phys. Rev. A 15, 128, 1977; 300-700 eV extrapolated to 1000 eV), and (3) the experimental data of Wagenaar et al. (J. Phys. B 19, 3124, 1986; 20-100 eV, 0[degrees]-10[degrees]), Register et al. (Phys. Rev. A 21, 1134, 1980; 20-200 eV), Bromberg (J. Chem. Phys. 61, 963, 1974; 200-700 eV) and Jansen et al. (J. Phys. B 9, 185, 1976; 200-1000 eV) with priorities in the order given. The fits, expressed as functions of the scattering angle with the impact energy as parameter, form smooth functions both over angles [theta] and energies E for easy interpolation. Maximum deviation from the data set is 10.4 % for experiments and 20% for theory at low angles [le] 10[degrees], where theory deviates from experiments. Comparisons in symbolic form between the present fits and DCS results from the experimental and theoretical literature of the past 10 years are also given. 24 refs., 4 tabs.

• OSTI ID: 6960800
• Journal Information: Atomic Data and Nuclear Data Tables; (United States), Journal Name: Atomic Data and Nuclear Data Tables; (United States) Vol. 52:1; ISSN ADNDAT; ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY RANGE
EV RANGE
FLUIDS
GASES
HELIUM
NONMETALS
RARE GASES
SCATTERING