EXCITATION OF DOUBLY EXCITED-STATES OF HELIUM BY ION IMPACT IN THE BORN APPROXIMATION

被引：23

作者：

BACHAU, H

BAHRI, M

MARTIN, F

SALIN, A

机构：

[1] UNIV BISKRA,INES HYDRAUL,BISKRA 07000,ALGERIA

[2] UNIV PARIS 06,UNITE RECH,PHYS INTERACT IONS MAT & MAT CONDENSEE,F-75231 PARIS 05,FRANCE

[3] INST CURIE,PHYS & CHIM SECT,CNRS,UA 1379,F-75231 PARIS 05,FRANCE

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1991年 / 24卷 / 08期

关键词：

D O I：

10.1088/0953-4075/24/8/017

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Previous work on the double excitation of helium by protons below 500 keV seemed to prove the validity of the Born approximation. This conclusion is challenged by recent experimental evidence. We evaluate the sensitivity of the Born calculations to atomic parameters and in particular to electron correlation. We conclude that the previously observed agreement between experiment and the Born approximation was accidental.

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页码：2015 / 2028

页数：14

相关论文

共 41 条

[1] EMISSION-ANGLE-DEPENDENT POSTCOLLISION INTERACTION [J].

ARCUNI, PW .

PHYSICAL REVIEW A, 1986, 33 (01) :105-111

[2] ANGULAR AND ENERGY-DISTRIBUTIONS OF ELECTRONS EJECTED IN IONIZATION OF HELIUM-ATOMS BY PROTONS AND ELECTRONS [J].

BELL, KL ;

KINGSTON, AE .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1975, 8 (16) :2666-2678

[3] LINE-SHAPE PARAMETERS FOR P-1 FESHBACH RESONANCES IN HE AND LI+ [J].

BHATIA, AK ;

TEMKIN, A .

PHYSICAL REVIEW A, 1984, 29 (04) :1895-1900

[4] ASYMMETRIC PEAKS IN ELECTRON SPECTRUM FOR H+ - HE COLLISIONS [J].

BORDENAV.A ;

BENOITCA.P .

PHYSICS LETTERS A, 1971, A 36 (03) :243-&

[5]

Bordenave-Montesquieu A., 1976, Atomic Data and Nuclear Data Tables, V17, P157, DOI 10.1016/0092-640X(76)90006-1

[6] IMPORTANCE OF CORRELATION EFFECTS IN IONIZATION OF HELIUM BY ELECTRON IMPACT [J].

BYRON, FW ;

JOACHAIN, CJ .

PHYSICAL REVIEW LETTERS, 1966, 16 (25) :1139-&

[7] EFFECTS OF CONFIGURATION INTERACTION ON INTENSITIES AND PHASE SHIFTS [J].

FANO, U .

PHYSICAL REVIEW, 1961, 124 (06) :1866-&

[8] MECHANISMS OF DOUBLE EXCITATION IN ION-ATOM COLLISIONS AT HIGH VELOCITIES [J].

FRITSCH, W ;

LIN, CD .

PHYSICAL REVIEW A, 1990, 41 (09) :4776-4782

[9] DOUBLE EXCITATION OF HE BY FAST IONS [J].

GIESE, JP ;

SCHULZ, M ;

SWENSON, JK ;

SCHONE, H ;

BENHENNI, M ;

VARGHESE, SL ;

VANE, CR ;

DITTNER, PF ;

SHAFROTH, SM ;

DATZ, S .

PHYSICAL REVIEW A, 1990, 42 (03) :1231-1244

[10] COMPLEX-COORDINATE CALCULATIONS FOR DOUBLY EXCITED-STATES OF 2-ELECTRON ATOMS [J].

HO, YK .

PHYSICAL REVIEW A, 1981, 23 (05) :2137-2149

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