DECAY OF AL-24 AND AL-24(META) TO GAMMA-RAY AND ALPHA-PARTICLE EMITTING STATES IN MG-24

被引：40

作者：

HONKANEN, J ^{[1
]}

KORTELAHTI, M ^{[1
]}

AYSTO, J ^{[1
]}

ESKOLA, K ^{[1
]}

HAUTOJARVI, A ^{[1
]}

机构：

[1] UNIV HELSINKI,DEPT PHYS,SF-00170 HELSINKI 17,FINLAND

来源：

PHYSICA SCRIPTA | 1979年 / 19卷 / 03期

关键词：

D O I：

10.1088/0031-8949/19/3/004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The level structure of 24Mg and decay properties of 129 ms 24Alm and 2.07 s 24Al have been investigated by means of γ-ray and particle spectroscopy. The energy and intensity of the isomeric transition were measured to be 425.8 ± 0.1 keV and (82.5 ± 3.0)%, respectively. The isomer was observed to decay via a super-allowed transition with a log ft value of 3.51 ± 0.04 to its 1+, 9965.2 ± 1.5 keV analog state in 24Mg. In addition, decay to seven particle-emitting levels and four levels depopulated by γ-ray emission were observed. In the decay of 2.07 s 24Al a new delayed α-particle group with an energy 3.04 MeV and three new γ-transitions were observed. More accurate values than those reported in earlier studies are given for γ-ray energies and intensities, and also for deduced excitation energies in 24Mg. Particle branches (per disintegration) were measured for the observed delayed particle groups. © 1979 IOP Publishing Ltd.

引用

页码：239 / 244

页数：6

共 19 条

[1] PRECISION ENERGY MEASUREMENT OF GAMMA-RAYS FROM N-15, O-16, AND FE-57 [J].

ALBURGER, DE .

NUCLEAR INSTRUMENTS & METHODS, 1976, 136 (02) :323-330

[2] MASSES AND DECAY OF AL24, P28, CL32, SC40, AND THEIR TZ=O ANALOG STATES [J].

ARMINI, AJ ;

SUNIER, JW ;

RICHARDS.JR .

PHYSICAL REVIEW, 1968, 165 (04) :1194-&

[3] AN ISOMERIC STATE IN 24A1 [J].

ARMINI, AJ ;

SUNIER, JW ;

POLICHAR, RM ;

RICHARDS.JR .

PHYSICS LETTERS, 1966, 21 (03) :335-&

[4] CARRIER-LOADED HELIUM-JET TRANSPORT METHOD [J].

AYSTO, J ;

PUUMALAI.P ;

VALLI, K .

NUCLEAR INSTRUMENTS & METHODS, 1974, 115 (01) :65-73

[5] EFFICIENCY OF AN ONLINE ISOTOPE SEPARATOR SYSTEM EMPLOYING COOLED AND NACL-LOADED HE-JET METHODS [J].

AYSTO, J ;

RANTALA, V ;

VALLI, K ;

HILLEBRAND, S ;

KORTELAHTI, M ;

ESKOLA, K ;

RAUNEMAA, T .

NUCLEAR INSTRUMENTS & METHODS, 1976, 139 (DEC15) :325-329

[6] BETA-DECAY OF AL-24 AND P-28 [J].

DETRAZ, C .

NUCLEAR PHYSICS A, 1972, A188 (03) :513-&

[7] ENERGY-LEVELS OF A = 21-44 NUCLEI .5. [J].

ENDT, PM ;

VANDERLE.C .

NUCLEAR PHYSICS A, 1973, A214 (OCT29) :1-625

[8] MASSES AND HALF-LIVES OF NA-20, AL-24, P-28, CL-32, AND K-36 FROM (P,N) REACTION [J].

GOOSMAN, DR ;

JONES, KW ;

WARBURTON, EK ;

ALBURGER, DE .

PHYSICAL REVIEW C, 1971, 4 (05) :1800-+

[9]

HARDY JC, 1974, NUCLEAR SPECTROSCO C, P417

[10]

HARDY JC, 1977, ANN REV NUCL SCI, V27, P333

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