MEASUREMENT OF FEII AND FEIII LIFETIMES BY BEAM-FOIL SPECTROSCOPY IN THE VACUUM ULTRAVIOLET

被引：11

作者：

DOLBY, JS ^{[1
]}

MCWHIRTER, RWP ^{[1
]}

SOFIELD, CJ ^{[1
]}

机构：

[1] AERE,DIV NUCL PHYS,HARWELL OX11 0RA,OXFORDSHIRE,ENGLAND

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1979年 / 12卷 / 02期

关键词：

D O I：

10.1088/0022-3700/12/2/010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is pointed out that there is a need for values of the oscillator strengths of many transitions in Fe II and Fe III in order to interpret the sun's Fraunhofer spectrum in the vacuum ultraviolet. A description is given of a beam-foil experiment to measure the atomic lifetimes for some of these transitions. Results are presented for three multiplets in Fe II and one in Fe III with estimated accuracies in the range +or-5% to +or-22%. Measurements for a wider range of transitions were not attempted because of difficulties arising from the crowded nature of the spectrum, the poor spectral resolution and general weakness of the signals.

引用

页码：187 / 201

页数：15

共 18 条

[1] MEASUREMENT OF HALF-LIFE OF SUPERALLOWED FERMI DECAY V-46(BETA+)TI-46 AND A STUDY OF SOME SYSTEMATIC-ERRORS INVOLVED [J].

BARKER, PH ;

SOFIELD, CJ ;

PETTY, RJ ;

FREEMAN, JM ;

HOATH, SD ;

BURCHAM, WE ;

SQUIER, GTA .

NUCLEAR PHYSICS A, 1977, 275 (01) :37-47

[2] FOIL SPECTRUM IN BEAM-FOIL SPECTRA [J].

BERRY, HG ;

MARTINSON, I ;

BROMANDER, J .

PHYSICS LETTERS A, 1970, A 31 (09) :521-+

[3]

Bevington P., 1969, DATA REDUCTION ERROR

[4] FURTHER MEASUREMENTS OF EMISSION-LINE PROFILES IN SOLAR ULTRAVIOLET-SPECTRUM [J].

BOLAND, BC ;

DYER, EP ;

FIRTH, JG ;

GABRIEL, AH ;

JONES, BB ;

JORDAN, C ;

MCWHIRTER, RWP ;

MONK, P ;

TURNER, RF .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1975, 171 (03) :697-&

[5]

BROMAGE GE, UNPUBLISHED

[6] RADIATIVE LIFETIMES OF RESONANCE LEVELS IN FEI AND FEII [J].

BRZOZOWSKI, J ;

ERMAN, P ;

LYYRA, M ;

HAYDENSMITH, W .

PHYSICA SCRIPTA, 1976, 14 (1-2) :48-50

[7]

CURTIS LJ, 1976, TOPICS CURRENT PHYSI, V1

[8] HARWELL 500 KV COCKCROFT-WALTON ACCELERATOR AND ITS USE AS A GENERAL RESEARCH FACILITY [J].

GOODE, PD .

NUCLEAR INSTRUMENTS & METHODS, 1971, 92 (04) :447-&

[9]

HAY HJ, 1971, P4311 FITTEM SUBR AU

[10]

KELLY RL, 1973, 7599 US NAV RES LAB

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