IONIZATION PLUS EXCITATION OF HELIUM BY FAST ELECTRON AND PROTON IMPACT

被引：32

作者：

FULLING, S

BRUCH, R

RAUSCHER, EA

NEILL, PA

TRABERT, E

HECKMANN, PH

MCGUIRE, JH

机构：

[1] RUHR UNIV BOCHUM,INST EXPTL PHYS 3,W-4630 BOCHUM,GERMANY

[2] TULANE UNIV,DEPT PHYS,NEW ORLEANS,LA 70118

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.68.3152

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first experimental results on the state selective cross-section ratio sigma+*/sigma* of helium for electron and proton impact. Our results show consistently higher yields for electrons than for protons at higher velocities. A comparison is made between thc cross-section ratios sigma-2+/sigma+ of helium for electron and proton impact.

引用

收藏

页码：3152 / 3155

页数：4

相关论文

共 36 条

[1] PARTIAL IONIZATION CROSS SECTIONS OF HE NE H2 AND CH4 FOR ELECTRONS FROM 20 TO 500 EV [J].

ADAMCZYK, B ;

BOERBOOM, AJ ;

SCHRAM, BL ;

KISTEMAK.J .

JOURNAL OF CHEMICAL PHYSICS, 1966, 44 (12) :4640-&

[2] MULTIPLE IONIZATION OF HE, NE, AND AR BY FAST PROTONS AND ANTIPROTONS [J].

ANDERSEN, LH ;

HVELPLUND, P ;

KNUDSEN, H ;

MOLLER, SP ;

SORENSEN, AH ;

ELSENER, K ;

RENSFELT, KG ;

UGGERHOJ, E .

PHYSICAL REVIEW A, 1987, 36 (08) :3612-3629

[3] CALCULATIONS OF COINCIDENT IONIZATION PLUS EXCITATION [J].

BECKER, RL .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 24-5 :256-260

[4]

Bethe H. A., 1957, QUANTUM MECH ONEAND, DOI DOI 10.1007/978-3-662-12869-5

[5] ABSOLUTE EMISSION CROSS-SECTIONS AT 30.4-NM FOR E-HE COLLISIONS AND AT 20.8-NM FOR NE4+-HE COLLISIONS [J].

BLOEMEN, EWP ;

WINTER, H ;

MARK, TD ;

DIJKKAMP, D ;

BARENDS, D ;

DEHEER, FJ .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1981, 14 (04) :717-725

[6] HE+ (NP) CROSS-SECTIONS FOR 2, 3, 4 AND 5 MEV C-4+ IONS COLLIDING WITH HE ATOMS [J].

BRUCH, R ;

KOCBACH, L ;

TRABERT, E ;

HECKMANN, PH ;

RAITH, B ;

WILL, U .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1985, 9 (04) :438-441

[7] HIGH-RESOLUTION EUV SATELLITE SPECTRA OF DOUBLY EXCITED HE-I (NLN'L'), N=2 TO 5 [J].

BRUCH, R ;

ALTICK, PL ;

TRABERT, E ;

HECKMANN, PH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1984, 17 (20) :L655-L660

[8] POSITRON AND ELECTRON-IMPACT DOUBLE IONIZATION OF HELIUM [J].

CHARLTON, M ;

ANDERSEN, LH ;

BRUNNIELSEN, L ;

DEUTCH, BI ;

HVELPLUND, P ;

JACOBSEN, FM ;

KNUDSEN, H ;

LARICCHIA, G ;

POULSEN, MR ;

PEDERSEN, JO .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (17) :L545-L549

[9] ABSOLUTE ELECTRON-IMPACT EMISSION CROSS-SECTION OF THE HE+ 22P-] 12S LINE AT 304-A PRODUCED BY SIMULTANEOUS IONIZATION EXCITATION [J].

FORAND, JL ;

BECKER, K ;

MCCONKEY, JW .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (07) :1409-1418

[10] IMPACT-PARAMETER DEPENDENCE OF HELIUM ATOM DOUBLE IONIZATION BY HIGH-ENERGY PROTONS AND ANTIPROTONS [J].

FORD, AL ;

READING, JF .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1990, 23 (15) :2567-2578

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