Analytical partitioning of total cross sections for electron scattering on noble gases

被引:29
|
作者
Brusa, RS
Karwasz, GP
Zecca, A
机构
[1] Istituto Nazionale di Fisica della Materia, Dipartimento di Fisica, Universita' degli Studi di Trento
来源
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1996年 / 38卷 / 04期
关键词
D O I
10.1007/s004600050092
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
Empirical analytical formulae are proposed, aiming at the description of partial cross sections for electron scattering on noble gases. Selected measurements of total, excitation and ionization cross sections for these gases have been fitted by these analytical formulae in the 20-5000 eV energy range. The elastic cross sections, obtained as the difference, compare quite well with the elastic experimental data for all gases but for helium. The difference elastic cross sections were fitted by a cross section formula derived from electron scattering on a single or double Yukawa potential in the first Born approximation. Our analysis shows a good consistency between partial and total cross sections for the four heavier gases. For helium, we suggest the possibility of large errors in the high energy part of total, elastic and excitation cross sections. The analytical expressions given in this paper allow to reproduce the total and partial cross sections within the measurement errors in a large energy range from a few tens of eV, up to several keV.
引用
收藏
页码:279 / 287
页数:9
相关论文
共 50 条
  • [41] Total cross sections for electron scattering on chloromethanes: Formulation of the additivity rule
    Karwasz, Grzegorz P.
    Brusa, Roberto S.
    Piazza, Andrea
    Zecca, Antonio
    Physical Review A - Atomic, Molecular, and Optical Physics, 1999, 59 (2-3): : 1341 - 1347
  • [42] Logarithmically accurate total cross sections of fast electron scattering by atoms
    B. A. Zon
    V. B. Zon
    Technical Physics, 2007, 52 : 35 - 38
  • [43] TOTAL CROSS-SECTIONS OF ELECTRON-SCATTERING FOR SFB MOLECULES
    ROMANYUK, NI
    CHERNYSHOVA, IV
    SHPENIK, OB
    ZHURNAL TEKHNICHESKOI FIZIKI, 1984, 54 (10): : 2051 - 2054
  • [44] TOTAL CROSS-SECTIONS FOR ELECTRON-SCATTERING BY OXIDES OF IRON
    BALUJA, KL
    AGRAWAL, A
    PHYSICS LETTERS A, 1995, 198 (03) : 225 - 227
  • [45] Measurements of total cross sections for electron scattering from helium and argon
    Li, TH
    Fen, AP
    Yong, Y
    RADIATION PHYSICS AND CHEMISTRY, 1996, 48 (06): : 711 - 714
  • [46] Relationship between electron-scattering grand total and ionization total cross sections
    Kwitnewski, S
    Ptasinska-Denga, E
    Szmytkowski, C
    RADIATION PHYSICS AND CHEMISTRY, 2003, 68 (1-2) : 169 - 174
  • [47] ESTIMATING DIFFERENTIAL SCATTERING CROSS SECTIONS IN GASES
    AHRENS, T
    JOURNAL OF APPLIED PHYSICS, 1954, 25 (04) : 505 - 506
  • [48] Total electron scattering cross-sections for carbon monoxide at low electron energies
    Rawat, P
    Subramanian, KP
    Kumar, V
    PRAMANA-JOURNAL OF PHYSICS, 1998, 51 (3-4): : 453 - 461
  • [49] Total electron scattering cross sections of He, Ne and Ar at intermediate electron energies
    Ariyasinghe, WM
    Goains, C
    Powers, D
    Wijeratne, T
    Palihawadana, P
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2004, 225 (03): : 191 - 197
  • [50] DEPOLARIZATION CROSS SECTIONS FOR METASTABLE NOBLE GASES BY OPTICAL PUMPING
    SCHEARER, LD
    PHYSICAL REVIEW, 1969, 188 (01): : 505 - &