MEASUREMENTS IN THE PERPENDICULAR PLANE OF ANGULAR-CORRELATIONS IN NEAR-THRESHOLD ELECTRON-IMPACT IONIZATION OF HELIUM

被引：32

作者：

HAWLEYJONES, TJ ^{[1
]}

READ, FH ^{[1
]}

CVEJANOVIC, S ^{[1
]}

HAMMOND, P ^{[1
]}

KING, GC ^{[1
]}

机构：

[1] UNIV MANCHESTER,SCHUSTER LAB,MANCHESTER M13 9PL,LANCS,ENGLAND

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1992年 / 25卷 / 10期

关键词：

D O I：

10.1088/0953-4075/25/10/018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Angular correlation measurements have been made of helium (e, 2e) scattering in the perpendicular plane, defined as the plane normal to the direction of the incident electron beam, at excess energies of 1, 2, 4 and 6 eV. The simultaneous analysis of these measurements with the coplanar measurements of Selles et al gives the value 74 +/- 7-degrees for the Wannier parameter-theta-0 that governs the widths of the angular correlation functions. It is also concluded that the upper limit of the excess energy for which the Wannier model is valid in helium is approximately 1.5 eV for coplanar scattering but appears to be higher for scattering in the perpendicular plane.

引用

页码：2393 / 2408

页数：16

共 42 条

[1] USE OF A LONG-RANGE CORRELATION FACTOR IN DESCRIBING TRIPLY DIFFERENTIAL ELECTRON-IMPACT IONIZATION CROSS-SECTIONS [J].

ALTICK, PL .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (09) :1841-1846

[2] MODEL-INDEPENDENT PARAMETERS FOR TRIPLY DIFFERENTIAL ELECTRON-IMPACT IONIZATION CROSS-SECTIONS AT LOW ENERGIES [J].

ALTICK, PL ;

ROSEL, T .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (14) :2635-2644

[3] USE OF A 2 CHANNELTRON COINCIDENCE IN A NEW LINE OF RESEARCH IN ATOMIC PHYSICS [J].

AMALDI, U ;

EGIDI, A ;

MARCONERO, R ;

PIZZELLA, G .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1969, 40 (08) :1001-+

[4] TRIPLE-DIFFERENTIAL 3-DIMENSIONAL CROSS-SECTIONS FOR LOW-ENERGY ELECTRON-IMPACT IONIZATION OF HELIUM [J].

BEATY, EC ;

HESSELBACHER, KH ;

HONG, SP ;

MOORE, JH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1977, 10 (04) :611-620

[5]

BEVINGTON PR, 1969, DATA REDUCTION ERROR, P243

[6] STUDY OF RESONANCE STRUCTURE IN HELIUM USING METASTABLE EXCITATION BY ELECTRON-IMPACT WITH HIGH-ENERGY RESOLUTION [J].

BRUNT, JNH ;

KING, GC ;

READ, FH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1977, 10 (03) :433-448

[7] MECHANISM OF (E,2E) REACTION WITH ATOMS [J].

CAMILLONI, R ;

GUIDONI, AG ;

MCCARTHY, IE ;

STEFANI, G .

PHYSICAL REVIEW A, 1978, 17 (05) :1634-1641

[8] QUANTAL THRESHOLD IONIZATION [J].

CROTHERS, DSF .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1986, 19 (04) :463-483

[9] STUDIES OF THRESHOLD ELECTRON-IMPACT IONIZATION OF HELIUM [J].

CVEJANOVIC, S ;

READ, FH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1974, 7 (14) :1841-1852

[10] DIFFERENTIAL CROSS-SECTIONS OF DIRECT SINGLE ELECTRON-IMPACT IONIZATION [J].

EHRHARDT, H ;

JUNG, K ;

KNOTH, G ;

SCHLEMMER, P .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1986, 1 (01) :3-32

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