Radiative decay data for highly excited Zr I levels

被引：8

作者：

Malcheva, G. ^{[1
]}

Mayo, R. ^{[2
,3
]}

Ortiz, M. ^{[3
]}

Ruiz, J. ^{[3
]}

Engstrom, L. ^{[4
]}

Lundberg, H. ^{[4
]}

Nilsson, H. ^{[5
]}

Quinet, P. ^{[6
,7
]}

Biemont, E. ^{[6
,7
]}

Blagoev, K. ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Inst Solid State Phys, BG-1784 Sofia, Bulgaria

[2] CIEMAT, E-28040 Madrid, Spain

[3] Univ Complutense Madrid, Fac Phys, E-28040 Madrid, Spain

[4] Lund Inst Technol, Dept Phys, S-22100 Lund, Sweden

[5] Lund Observ, S-22100 Lund, Sweden

[6] Univ Liege, IPNAS, B-4000 Liege, Belgium

[7] Univ Mons, B-7000 Mons, Belgium

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2009年 / 395卷 / 03期

基金：

瑞典研究理事会;

关键词：

atomic data; atomic processes; methods: laboratory; OSCILLATOR-STRENGTHS; SOLAR ABUNDANCE; BEAM-FOIL; R-PROCESS; LIFETIMES; ATOMS; ZIRCONIUM; SPECTRUM; ELEMENTS; SPECTROSCOPY;

D O I：

10.1111/j.1365-2966.2009.14629.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Radiative lifetimes of 17 excited levels in Zr I, in the energy interval 29 000-40 974 cm(-1), have been investigated using the time-resolved laser-induced fluorescence method. The levels belong to the 4d(2)5s5p, 4d(3)5p and 4d5s(2)5p electronic configurations and were excited in a single-step process from either the ground term, 4d(2)5s(2) a F-3, or from the low-lying 4d(2)5s(2) a P-3 and a F-5 terms. For three levels, we confirm previous measurements while for 14 of the levels the lifetimes have been measured for the first time. The experimental results are compared to theoretical calculations performed with a multiconfiguration relativistic Hartree-Fock method including core-polarization effects. Theoretical transition probabilities of astrophysical interest, scaled by the experimental lifetimes, for the depopulating channels of the investigated levels are also presented.

引用

页码：1523 / 1528

页数：6

共 27 条

[1] LIFETIMES OF EXCITED-STATES IN YI, YII, AND ZRI BY BEAM-FOIL AND BEAM-SPUTTERING EXCITATION [J].

ANDERSEN, T ;

RAMANUJAM, PS ;

BAHR, K .

ASTROPHYSICAL JOURNAL, 1978, 223 (01) :344-349

[2] RADIATIVE LIFETIME AND HYPERFINE-STRUCTURE STUDIES ON LASER-EVAPORATED BORON [J].

BERGSTROM, H ;

FARIS, GW ;

HALLSTADIUS, H ;

LUNDBERG, H ;

PERSSON, A ;

WAHLSTROM, CG .

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1988, 8 (01) :17-23

[3] OSCILLATOR-STRENGTHS FOR ZR I AND ZR II AND A NEW DETERMINATION OF THE SOLAR ABUNDANCE OF ZIRCONIUM [J].

BIEMONT, E ;

GREVESSE, N ;

HANNAFORD, P ;

LOWE, RM .

ASTROPHYSICAL JOURNAL, 1981, 248 (02) :867-873

[4] Recent advances and difficulties in oscillator strength determination for rare-earth elements and ions [J].

Biémont, É .

PHYSICA SCRIPTA, 2005, T119 :55-60

[5]

Biémont E, 2003, PHYS SCRIPTA, VT105, P38

[6]

Bogdanovich P, 1995, ASTR SOC P, V78, P395

[7] A simple method of accounting for correlation effects in electron transitions and its application in finding oscillator strengths and the solar abundance of zirconium [J].

Bogdanovich, P ;

Tautvaisiene, G ;

Rudzikas, Z ;

Momkauskaite, A .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1996, 280 (01) :95-102

[8]

Cowan R. D., 1981, THEORY ATOMIC STRUCT

[9] RADIATIVE LIFETIMES IN ZR-I [J].

DUQUETTE, DW ;

SALIH, S ;

LAWLER, JE .

PHYSICAL REVIEW A, 1982, 25 (06) :3382-3384

[10]

Fraga S., 1976, Handbook of atomic data

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