EXTRAPOLATION OF ELECTRON-RARE GAS ATOM CROSS SECTIONS TO ZERO ENERGY

Journal Article · Wed May 01 04:00:00 EDT 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.130.1020· OSTI ID:4708710

O'Malley, T F

Modified effective-range formulas recently developed for electron-atoim scattering are employed first to analyze the Ramsauer- Kollath (RK) electron-rare gas atom cross sections, and then to compare them with determinations of the same quantities made by different and newer methods. It is found that these cross sections can be extrapolated unambiguously down to zero energy. The extrapolated RK scattering lengths are found to lie approximately 1.19, 0.24, tively. Good agreement is found, in general, both in sign and magnitude with the pressure shift estimates of the scattering lengths. Momentum transfer cross sections are also extended down to zero energy and are compared with some drift velocity and microwave results. The best agreement is found with the Gilardini and Brown curve for Ne, and with those of Pack, Phelps, Frost, and Voshall for the other rare gases, although there are some differences with the latter. In particular, a pressure effect'' is discussed in connection with these results. (auth)

• Research Organization: New York Univ., New York
• NSA Number: NSA-17-018963
• OSTI ID: 4708710
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 130; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARGON
ATOMS
CROSS SECTIONS
ELECTRONS
ENERGY
HELIUM
KRYPTON
MICROWAVES
MOMENTUM
NEON
NUMERICALS
PHYSICS
PRESSURE
RARE GASES
SCATTERING
SPECTRAL SHIFT
VELOCITY
XENON