Two-photon detachment of negative ions via magnetic dipole transitions

被引：34

作者：

Thogersen, J

Scheer, M

Steele, LD

Haugen, HK

Wijesundera, WP

机构：

[1] MCMASTER UNIV,INST MAT RES,DEPT ENGN & PHYS,HAMILTON,ON L8S 4M1,CANADA

[2] MCMASTER UNIV,CTR ELECTROPHOTON MAT & DEVICES,HAMILTON,ON L8S 4M1,CANADA

[3] UNIV TORONTO,DEPT PHYS,TORONTO,ON M5S 1A7,CANADA

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.76.2870

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two-photon detachment spectroscopy of the Ir- (5d(8)6s(2 3)F(4)) and Pt- (5d(9)6s(2 2)D(5/2)) ions is conducted using laser intensities similar to 10(10) W/cm(2). Sharp resonances in the two-photon detachment yields, attributed to magnetic dipole transitions, are observed at photon energies of 7087.3 +/- 0.4 and 9740.9 +/- 0.5 cm(-1) for Ir- and Pt-, respectively. Multiconfiguration Dirac-Fock calculations predict fine structure splittings of 6671 and 9535 cm(-1) for Ir- (J = 4-3) and Pt- (J = 5/2-3/2), and A coefficients of 7 and 14 s(-1), respectively, for the upper fine structure levels of the ions.

引用

页码：2870 / 2873

页数：4

共 27 条

[1] METASTABLE-ION LIFETIME STUDIES UTILIZING A HEAVY-ION STORAGE RING - MEASUREMENTS ON HE- [J].

ANDERSEN, T ;

ANDERSEN, LH ;

BALLING, P ;

HAUGEN, HK ;

HVELPLUND, P ;

SMITH, WW ;

TAULBJERG, K .

PHYSICAL REVIEW A, 1993, 47 (02) :890-896

[2] SPECTROSCOPY OF NEGATIVE-IONS [J].

ANDERSEN, T .

PHYSICA SCRIPTA, 1991, T34 :23-35

[3] METASTABLE ION LIFETIME STUDIES UTILIZING A HEAVY-ION STORAGE RING - MEASUREMENTS ON BE- [J].

BALLING, P ;

ANDERSEN, LH ;

ANDERSEN, T ;

HAUGEN, HK ;

HVELPLUND, P ;

TAULBJERG, K .

PHYSICAL REVIEW LETTERS, 1992, 69 (07) :1042-1045

[4]

BATES D. R., 1991, ADV ATOM MOL PHYS, V27, P1

[5]

Bott J.F., 1976, HDB CHEM LASERS

[6]

Corney A., 1977, Atomic and Laser Spectroscopy

[7]

Davidson M. D., 1993, Comments on Atomic and Molecular Physics, V29, P65

[8] FROM 1/R TO 1/R(2) POTENTIALS - ELECTRON-EXCHANGE BETWEEN RYDBERG ATOMS AND POLAR-MOLECULES [J].

DESFRANCOIS, C ;

ABDOULCARIME, H ;

KHELIFA, N ;

SCHERMANN, JP .

PHYSICAL REVIEW LETTERS, 1994, 73 (18) :2436-2439

[9] GRASP - A GENERAL-PURPOSE RELATIVISTIC ATOMIC-STRUCTURE PROGRAM [J].

DYALL, KG ;

GRANT, IP ;

JOHNSON, CT ;

PARPIA, FA ;

PLUMMER, EP .

COMPUTER PHYSICS COMMUNICATIONS, 1989, 55 (03) :425-456

[10]

FIEGERLE CS, 1981, J CHEM PHYS, V74, P1580

← 1 2 3 →