Threshold photodetachment of Al-:: Electron affinity and fine structure

被引：47

作者：

Scheer, M ^{[1
]}

Bilodeau, RC

Thogersen, J

Haugen, HK

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] McMaster Univ, Brockhouse Inst Mat Res, Dept Engn Phys, Hamilton, ON L8S 4M1, Canada

[3] McMaster Univ, Ctr Electrophoton Mat & Devices, Hamilton, ON L8S 4M1, Canada

来源：

PHYSICAL REVIEW A | 1998年 / 57卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.57.R1493

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Tunable infrared laser spectroscopy of Al- (3p(2 3)P(J)) has yielded an improved value for the electron affinity of aluminum and experimental data on the previously unobserved fine structure of the ionic ground state. The electron affinity is determined to be 3491.0(4) cm(-1) [432.83(5) meV], and the J = 0-1 and J = 1-2 splittings are found to be 22.7(3) and 45.7(2) cm(-1), respectively. The result for the electron affinity is in substantial disagreement with a very recent experimental investigation. Our work also indicates that isoelectronic extrapolations for the ionic fine structure were accurate within uncertainties, and is in good agreement with recent calculations of the electron affinity. [S1050-2947(97)50512-9].

引用

页码：R1493 / R1496

页数：4

共 25 条

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

ANDERSEN, T .

PHYSICA SCRIPTA, 1991, T34 :23-35

[2] ACCURATE CALCULATION OF THE ELECTRON-AFFINITIES OF THE GROUP-13 ATOMS [J].

ARNAU, F ;

MOTA, F ;

NOVOA, JJ .

CHEMICAL PHYSICS, 1992, 166 (1-2) :77-84

[3]

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

[4] RECENT EXPERIMENTAL ACHIEVEMENTS WITH NEGATIVE-IONS [J].

BLONDEL, C .

PHYSICA SCRIPTA, 1995, T58 :31-42

[5] ATOMIC NEGATIVE-ION RESONANCES [J].

BUCKMAN, SJ ;

CLARK, CW .

REVIEWS OF MODERN PHYSICS, 1994, 66 (02) :539-655

[6] Near-threshold infrared photodetachment of Al-: A determination of the electron affinity of aluminium and the range of validity of the Wigner law [J].

Calabrese, D ;

Covington, AM ;

Thompson, JS ;

Marawar, RW ;

Farley, JW .

PHYSICAL REVIEW A, 1996, 54 (04) :2797-2804

[7] Resonance feature in Al- photodetachment below the Al(3s(2)4s(2)S) threshold [J].

Davies, BJ ;

Ingram, CW ;

Larson, DJ ;

Liu, CN ;

Starace, AF .

PHYSICAL REVIEW A, 1997, 56 (01) :378-385

[8] LASER PHOTOELECTRON SPECTROMETRY OF FE- - ELECTRON-AFFINITY OF IRON AND THE NON-STATISTICAL FINE-STRUCTURE DETACHMENT INTENSITIES AT 488-NM [J].

ENGELKING, PC ;

LINEBERGER, WC .

PHYSICAL REVIEW A, 1979, 19 (01) :149-155

[9] PHOTODETACHMENT CROSS-SECTIONS OF NEGATIVE-IONS - THE RANGE OF VALIDITY OF THE WIGNER THRESHOLD LAW [J].

FARLEY, JW .

PHYSICAL REVIEW A, 1989, 40 (11) :6286-6292

[10] ELECTRON-AFFINITIES OF B, AL, BI, AND PB [J].

FEIGERLE, CS ;

CORDERMAN, RR ;

LINEBERGER, WC .

JOURNAL OF CHEMICAL PHYSICS, 1981, 74 (02) :1513-1515

← 1 2 3 →