MULTIPHOTON SPECTROSCOPY OF DOUBLY EXCITED AUTOIONIZING STATES OF CA

被引：19

作者：

GAARDSTED, JO ^{[1
]}

ANDERSEN, T ^{[1
]}

HAUGEN, HK ^{[1
]}

HANSEN, JE ^{[1
]}

VAECK, N ^{[1
]}

机构：

[1] UNIV AMSTERDAM, ZEEMAN LAB, 1018 TV AMSTERDAM, NETHERLANDS

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1991年 / 24卷 / 20期

关键词：

D O I：

10.1088/0953-4075/24/20/008

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The autoionizing spectrum of Ca has been studied in the wavelength ranges of 490-540 nm and 555-590 nm through multiphoton absorption and the subsequent decay to excited Ca+ (4p 2P3/2,1/2) states. The fluorescence signal of Ca+(4p) exhibits resonances attributed to the 3d6p and 3dnf (n = 4-7) doubly excited autoionizing J = 1, 3 states (three-photon absorption) together with resonances due to excited bound states (two-photon absorption) of the neutral atom. Sufficient atomic density was obtained utilizing a vapour in a moderate pressure regime (2-5 m Torr) such that collisional excitation was still negligible. The pulsed approximately 8 ns duration (FWHM) laser radiation was used in linear as well as in circular polarization. The observed J = 3 states has been interpreted with the help of theoretical results obtained by a configuration interaction approach.

引用

页码：4363 / 4377

页数：15

共 27 条

[11]

DELONE NB, 1984, MULTIPHOTON IONIZATI, P235

[12] NONRESONANT MULTIPHOTON IONIZATION OF CALCIUM ATOMS IN AN INTENSE LASER FIELD [J].

DIMAURO, LF ;

KIM, D ;

COURTNEY, MW ;

ANSELMENT, M .

PHYSICAL REVIEW A, 1988, 38 (05) :2338-2346

[13] LASER-BASED VUV SPECTROSCOPY OF DOUBLY EXCITED CA-I [J].

FAROOQI, SM ;

CONNERADE, JP ;

GREENE, CH ;

MARANGOS, J ;

HUTCHINSON, MHR ;

SHEN, N .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1991, 24 (07) :L179-L184

[14]

FELDMAN D, 1984, MULTIPHOTON IONIZATI, P223

[15] 2-PHOTON AND 3-PHOTON RESONANT IONIZATION OF STRONTIUM - ENERGY AND ANGULAR-DISTRIBUTION OF THE ELECTRONS [J].

FELDMANN, D ;

WELGE, KH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1982, 15 (11) :1651-1662

[16] MULTI-PHOTON IONIZATION OF STRONTIUM CREATING SR+ AND SR2+ [J].

FELDMANN, D ;

KRAUTWALD, J ;

CHIN, SL ;

VONHELLFELD, A ;

WELGE, KH .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1982, 15 (11) :1663-1670

[17]

Gallagher T. F., 1979, Laser Spectroscopy IV, P273

[18] NEW MEASUREMENTS OF THE CROSS-SECTIONS OF DOUBLY EXCITED RESONANCES IN CALCIUM [J].

GRIESMANN, U ;

SHEN, N ;

CONNERADE, JP ;

SOMMER, K ;

HORMES, J .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1988, 21 (04) :L83-L88

[19] FLUORESCENCE STUDIES OF MULTIPLE-PHOTON IONIZATION PROCESSES - 4-PHOTON AND 5-PHOTON IONIZATION OF SR AT WAVELENGTHS OF 558-590-NM [J].

HAUGEN, HK ;

OTHONOS, AS .

PHYSICAL REVIEW A, 1989, 39 (07) :3392-3400

[20] FLUORESCENCE STUDIES OF MULTIPHOTON IONIZATION OF SR - PRODUCTION OF EXCITED IONIC STATES [J].

HAUGEN, HK ;

OTHONOS, AS .

PHYSICAL REVIEW A, 1988, 38 (12) :6448-6450

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