NEAR-THRESHOLD EFFECTS IN POSITRON-O2 SCATTERING

被引：37

作者：

LARICCHIA, G

MOXOM, J

CHARLTON, M

机构：

[1] Department of Physics and Astronomy, University College London, London WC1E 6BT, Gower Street

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.70.3229

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Structure has been observed in the total ionization cross section of O2 above 8 eV positron impact energy. A comparison with available data on the excitation to the Schumann-Runge continuum indicates that coupling effects between the positronium formation, excitation, and direct ionization channels may be responsible.

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页码：3229 / 3230

页数：2

相关论文

共 17 条

[1] POSITRONIUM FORMATION IN POSITRON HYDROGEN SCATTERING [J].

BROWN, CJ ;

HUMBERSTON, JW .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (12) :L401-L406

[2] PARTITIONING OF THE POSITRON HELIUM TOTAL SCATTERING CROSS-SECTION [J].

CAMPEANU, RI ;

FROMME, D ;

KRUSE, G ;

MCEACHRAN, RP ;

PARCELL, LA ;

RAITH, W ;

SINAPIUS, G ;

STAUFFER, AD .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (14) :3557-3570

[3] TOTAL SCATTERING CROSS-SECTIONS FOR LOW-ENERGY POSITRONS IN THE MOLECULAR GASES H-2,N-2,CO2,O-2 AND CH4 [J].

CHARLTON, M ;

GRIFFITH, TC ;

HEYLAND, GR ;

WRIGHT, GL .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1983, 16 (02) :323-341

[4] ELASTIC POSITRON-HELIUM SCATTERING NEAR THE POSITRONIUM FORMATION THRESHOLD [J].

COLEMAN, PG ;

JOHNSTON, KA ;

COX, AMG ;

GOODYEAR, A ;

CHARLTON, M .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1992, 25 (22) :L585-L588

[5] TOTAL-CROSS-SECTION MEASUREMENTS FOR POSITRON AND ELECTRON-SCATTERING BY O-2, CH4, AND SF6 [J].

DABABNEH, MS ;

HSIEH, YF ;

KAUPPILA, WE ;

KWAN, CK ;

SMITH, SJ ;

STEIN, TS ;

UDDIN, MN .

PHYSICAL REVIEW A, 1988, 38 (03) :1207-1216

[6] OBSERVATION OF STRUCTURE IN INTERMEDIATE-ENERGY POSITRON-ARGON DIFFERENTIAL ELASTIC-SCATTERING [J].

DOU, L ;

KAUPPILA, WE ;

KWAN, CK ;

STEIN, TS .

PHYSICAL REVIEW LETTERS, 1992, 68 (19) :2913-2916

[7] PARTIAL CROSS-SECTION MEASUREMENTS FOR IONIZATION OF HELIUM BY POSITRON IMPACT [J].

FROMME, D ;

KRUSE, G ;

RAITH, W ;

SINAPIUS, G .

PHYSICAL REVIEW LETTERS, 1986, 57 (24) :3031-3034

[8] IONIZATION OF MOLECULAR-HYDROGEN BY POSITRONS [J].

FROMME, D ;

KRUSE, G ;

RAITH, W ;

SINAPIUS, G .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (10) :L261-L265

[9] POSITRON SCATTERING BY ATOMIC-HYDROGEN INCLUDING POSITRONIUM FORMATION [J].

HIGGINS, K ;

BURKE, PG .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1991, 24 (14) :L343-L349

[10] INELASTIC CROSS-SECTION MEASUREMENTS FOR SLOW-POSITRON-O-2 COLLISIONS [J].

KATAYAMA, Y ;

SUEOKA, O ;

MORI, S .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (07) :1645-1657