EXCITATION IONIZATION AND DOUBLE-IONIZATION OF HELIUM BY HIGH-ENERGY PHOTON IMPACT

被引：104

作者：

ANDERSSON, LR ^{[1
]}

BURGDORFER, J ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.71.50

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ratio of double to single ionization by photoabsorption is calculated for photon impact energies in the range 2-18 keV. Employing the acceleration form of the dipole operator and representing the electron-electron correlation in the final state by a Coulomb distortion factor, R=sigma++/sigma+ approaches an asymptotic value of 1.66% and reaches a value of about 2.5% at 2 keV photon energy. Comparison with experimental data shows good agreement when contributions due to Compton scattering are taken into account.

引用

页码：50 / 53

页数：4

共 24 条

[11] SUM RULES FOR OSCILLATOR STRENGTHS OF H- [J].

DALGARNO, A ;

EWART, RW .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1962, 80 (515) :616-&

[12] THE LAMB SHIFT OF HELIUM [J].

DALGARNO, A ;

STEWART, AL .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1960, 76 (487) :49-55

[13] 20-PARAMETER EIGENFUNCTIONS AND ENERGY VALUES OF THE GROUND STATES OF HE AND HE-LIKE IONS [J].

HART, JF ;

HERZBERG, G .

PHYSICAL REVIEW, 1957, 106 (01) :79-82

[14] DOUBLE IONIZATION OF HE BY HIGH-ENERGY PHOTON IMPACT [J].

HINO, K .

PHYSICAL REVIEW A, 1993, 47 (06) :4845-4848

[15] PHOTOIONIZATION OF 2 ELECTRONS IN HELIUM [J].

ISHIHARA, T ;

HINO, K ;

MCGUIRE, JH .

PHYSICAL REVIEW A, 1991, 44 (11) :R6980-R6982

[16] GROUND STATE OF THE HELIUM ATOM [J].

KINOSHITA, T .

PHYSICAL REVIEW, 1957, 105 (05) :1490-1502

[17] MEASUREMENT OF THE RATIO OF DOUBLE-TO-SINGLE PHOTOIONIZATION OF HELIUM AT 2.8 KEV USING SYNCHROTRON RADIATION [J].

LEVIN, JC ;

LINDLE, DW ;

KELLER, N ;

MILLER, RD ;

AZUMA, Y ;

MANSOUR, NB ;

BERRY, HG ;

SELLIN, IA .

PHYSICAL REVIEW LETTERS, 1991, 67 (08) :968-971

[18] HIGH-ENERGY BEHAVIOR OF THE DOUBLE PHOTOIONIZATION OF HELIUM FROM 2-KEV TO 12-KEV [J].

LEVIN, JC ;

SELLIN, IA ;

JOHNSON, BM ;

LINDLE, DW ;

MILLER, RD ;

BERRAH, N ;

AZUMA, Y ;

BERRY, HG ;

LEE, DH .

PHYSICAL REVIEW A, 1993, 47 (01) :R16-R19

[19] ASYMMETRY PARAMETER FOR DOUBLE PHOTOIONIZATION [J].

MAULBETSCH, F ;

BRIGGS, JS .

PHYSICAL REVIEW LETTERS, 1992, 68 (13) :2004-2006

[20]

MCMASTER WH, 1969, UCRL50174 U CAL LIV

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