Measurement of the electron affinity of potassium -: art. no. 022503

被引：34

作者：

Andersson, KT ^{[1
]}

Sandström, J

Kiyan, IY

Hanstorp, D

Pegg, DJ

机构：

[1] Chalmers Univ Technol, Dept Phys, SE-41296 Gothenburg, Sweden

[2] Russian Acad Sci, Inst Gen Phys, Moscow 117942, Russia

[3] Univ Gothenburg, SE-41296 Gothenburg, Sweden

[4] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA

来源：

PHYSICAL REVIEW A | 2000年 / 62卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.62.022503

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A high-resolution measurement of the electron affinity of potassium has been made using the laser photo-detachment threshold technique. A sensitive collinear laser-negative-ion beam apparatus was used in the experiment. We investigated the threshold for photodetachment of K- leading to the formation of residual K atoms in the 4p(3/2) state. These excited atoms were selectively detected by use of resonance ionization. The result, an electron affinity of 501.459(12) meV for K, is significantly more accurate than previous measurements and current theory.

引用

页数：5

共 11 条

[1] Binding energies in atomic negative ions: III [J].

Andersen, T ;

Haugen, HK ;

Hotop, H .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1999, 28 (06) :1511-1533

[2]

Chen GX, 1998, CHEM PHYS LETT, V290, P211, DOI 10.1016/S0009-2614(98)00552-1

[3] CORRELATION IN THE GROUND-STATE OF LI-, NA- AND K- [J].

CHRISTENSENDALSGAARD, BL .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (14) :2539-2554

[4]

Corliss C., 1985, J PHYS CHEM REF DA S, V14

[5] Electron affinity of Li: A state-selective measurement [J].

Haeffler, G ;

Hanstorp, D ;

Kiyan, I ;

Klinkmuller, AE ;

Ljungblad, U ;

Pegg, DJ .

PHYSICAL REVIEW A, 1996, 53 (06) :4127-4131

[6] NEW METHOD TO MEASURE THE RELATIVISTIC DOPPLER-SHIFT - 1ST RESULTS AND A PROPOSAL [J].

JUNCAR, P ;

BINGHAM, CR ;

BOUNDS, JA ;

PEGG, DJ ;

CARTER, HK ;

MLEKODAJ, RL ;

COLE, JD .

PHYSICAL REVIEW LETTERS, 1985, 54 (01) :11-13

[7] HIGH-RESOLUTION LASER SPECTROSCOPY IN FAST BEAMS [J].

KAUFMAN, SL .

OPTICS COMMUNICATIONS, 1976, 17 (03) :309-312

[8] TREATMENT OF INTERSHELL CORRELATION-EFFECTS IN ABINITIO CALCULATIONS BY USE OF CORE POLARIZATION POTENTIALS - METHOD AND APPLICATION TO ALKALI AND ALKALINE-EARTH ATOMS [J].

MULLER, W ;

FLESCH, J ;

MEYER, W .

JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (07) :3297-3310

[9] ALKALI NEGATIVE-IONS .3. MULTICHANNEL PHOTODETACHMENT STUDY OF CS- AND K- [J].

SLATER, J ;

READ, FH ;

NOVICK, SE ;

LINEBERGER, WC .

PHYSICAL REVIEW A, 1978, 17 (01) :201-213

[10] THEORETICAL ELECTRON AFFINITIES FOR SOME OF ALKALI AND ALKALINE-EARTH ELEMENTS [J].

WEISS, AW .

PHYSICAL REVIEW, 1968, 166 (01) :70-&

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