OSCILLATIONS IN MEAN CAPTURE Q-VALUES AS FUNCTIONS OF THE PROJECTILE CHARGE IN SLOW XE-Q+-HE (25-LESS-THAN-OR-EQUAL-TO-Q-LESS-THAN-OR-EQUAL-TO-44) COLLISIONS

被引：15

作者：

CEDERQUIST, H ^{[1
]}

BIEDERMANN, C ^{[1
]}

SELBERG, N ^{[1
]}

HVELPLUND, P ^{[1
]}

机构：

[1] AARHUS UNIV, INST PHYS, DK-8000 AARHUS C, DENMARK

来源：

PHYSICAL REVIEW A | 1995年 / 51卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.51.2191

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have measured mean Q values for single-electron capture and transfer ionization in slow collisions between Xe projectiles of very high charge q and He. For the former process we observed an oscillatory behavior as a function of q, reflecting the discrete nature of the capture states. The experimental Q values for transfer ionization are substantially higher than the minimum Q values predicted by the extended classical over-the-barrier model. These results offer an explanation for earlier reported anomalously low ratios between the cross sections for two- and one-electron removal from He in collisions with highly charged Xe [H. Andersson, G. Astner, and H. Cederquist, J. Phys. B 21, L187 (1988); H. Cederquist et al., ibid. 25, L69 (1992)]. © 1995 The American Physical Society.

引用

收藏

页码：2191 / 2198

页数：8

相关论文

共 30 条

[1] TOTAL CROSS-SECTIONS FOR DIFFERENT CHARGE CHANGING PROCESSES IN COLLISIONS OF HIGHLY CHARGED XE IONS WITH HE ATOMS AT LOW-ENERGY [J].

ANDERSSON, H ;

ASTNER, G ;

CEDERQUIST, H .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (08) :L187-L193

[2] ABSOLUTE CROSS-SECTIONS FOR MULTI-ELECTRON PROCESSES IN LOW-ENERGY ARQ+-AR COLLISIONS - COMPARISON WITH THEORY [J].

BARANY, A ;

ASTNER, G ;

CEDERQUIST, H ;

DANARED, H ;

HULDT, S ;

HVELPLUND, P ;

JOHNSON, A ;

KNUDSEN, H ;

LILJEBY, L ;

RENSFELT, KG .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1985, 9 (04) :397-399

[3] MULTIPLE ELECTRON-CAPTURE BY HIGHLY CHARGED IONS AT KEV ENERGIES [J].

BARAT, M ;

RONCIN, P .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1992, 25 (10) :2205-2243

[4]

BOTTCHER C, COMMUNICATION

[5] ON THE ROLE OF TRANSFER EXCITATION IN SLOW XEQ+-HE,XE (15-LESS-THAN-OR-EQUAL-TO-Q-LESS-THAN-OR-EQUAL-TO-42) COLLISIONS [J].

CEDERQUIST, H ;

BEEBE, E ;

BIEDERMANN, C ;

ENGSTROM, A ;

GAO, H ;

HUTTON, R ;

LEVIN, JC ;

LILJEBY, L ;

QUINTEROS, T ;

SELBERG, N ;

SIGRAY, P .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1992, 25 (03) :L69-L75

[6] MEASUREMENTS OF TRANSLATIONAL ENERGY GAIN FOR ONE-ELECTRON AND 2-ELECTRON TRANSFER IN SLOW AR-Q+-HE (Q=15-18) COLLISIONS [J].

CEDERQUIST, H ;

BIEDERMANN, C ;

SELBERG, N ;

HVELPLUND, P .

PHYSICAL REVIEW A, 1995, 51 (03) :2169-2178

[7] STRONG RADIATIVE DECAY OF DOUBLE RYDBERG STATES IN HIGH-Q IONS [J].

CEDERQUIST, H ;

BIEDERMANN, C ;

SELBERG, N ;

LILJEBY, L ;

BEEBE, E .

PHYSICA SCRIPTA, 1993, T46 :218-224

[8] TRANSFER EXCITATION IN SLOW COLLISIONS BETWEEN IONS OF VERY HIGH CHARGE AND 2-ELECTRON TARGETS [J].

CEDERQUIST, H .

PHYSICAL REVIEW A, 1991, 43 (05) :2306-2310

[9] 2-ELECTRON AND MORE-ELECTRON TRANSITIONS IN SLOW MULTICHARGED ION-HE COLLISIONS [J].

HOEKSTRA, R ;

DEHEER, FJ ;

WINTER, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1987, 23 (1-2) :104-108

[10] ENERGY GAIN SPECTROSCOPY STUDIES OF ELECTRON-CAPTURE BY XEQ+ (10-LESS-THAN-OR-EQUAL-TO-Q-LESS-THAN-OR-EQUAL-TO-20) IN COLLISIONS WITH NE, AR AND XE [J].

HVELPLUND, P ;

BARANY, A ;

CEDERQUIST, H ;

PEDERSEN, JOK .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (11) :2515-2529