SOME PROPERTIES OF STATES AT 1.346, 1.459, AND 1.554-MEV IN F19

被引：27

作者：

POLETTI, AR

BECKER, JA

MCDONALD, RE

机构：

[1] Lockheed Palo Alto Research Laboratory, Palo Alto

[2] Department of Physics, University of Auckland, Auckland

来源：

PHYSICAL REVIEW | 1969年 / 182卷 / 04期

关键词：

D O I：

10.1103/PhysRev.182.1054

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the radiative decay of the triplet of levels at 1.346, 1.459, and 1.554 MeV in F19 have been made with a Ge(Li) γ-ray spectrometer. Results of lifetime measurements for these states when averaged with previous work are, respectively, τm=4.9±0.5 psec, 0.084±0.020 psec, and 4.4-2.0+2.4 fsec. Accurate energies of the three states were determined to be 1345.75±0.20, 1459.1±0.5, and 1554.1±0.3 keV. Information on decay modes and mixing ratios has also been obtained for these states. The decay branching of the 1.459-MeV level was found to differ significantly from that reported by previous investigators. The results are compared with various model predictions. © 1969 The American Physical Society.

引用

页码：1054 / &

共 33 条

[1] ENERGY LEVELS OF LIGHT NUCLEI .6. [J].

AJZENBERGSELOVE, F ;

LAURITSEN, T .

NUCLEAR PHYSICS, 1959, 11 (01) :1-340

[2] A SHELL-MODEL STUDY OF ISOTOPES OF O F AND NE [J].

ARIMA, A ;

COHEN, S ;

LAWSON, RD ;

MACFARLANE, MH .

NUCLEAR PHYSICS A, 1968, A108 (01) :94-+

[3] A STUDY OF DEFORMATION IN LIGHT NUCLEI .I. APPLICATION TO GROUND STATE BAND OF 2ONE AND TO LOW-ENERGY SPECTRUM OF 19F [J].

BENSON, HG ;

FLOWERS, BH .

NUCLEAR PHYSICS A, 1969, A126 (02) :305-&

[4]

BEVINGTON PR, PRIVATE COMMUNICATIO

[5] NUCLEAR RESONANCE FLUORESCENCE FROM LIGHT + MEDIUM WEIGHT NUCLEI [J].

BOOTH, EC ;

CHASAN, B ;

WRIGHT, KA .

NUCLEAR PHYSICS, 1964, 57 (02) :403-&

[6] NUCLEAR RESONANCE SCATTERING OF BREMSSTRAHLUNG [J].

BOOTH, EC ;

WRIGHT, KA .

NUCLEAR PHYSICS, 1962, 35 (03) :472-&

[7]

CHALMERS RA, PRIVATE COMMUNICATIO

[8] LOW-LYING STATES OF F19 [J].

DREIZLER, RM .

PHYSICAL REVIEW B, 1964, 136 (2B) :B321-&

[9] THE STRUCTURE OF THE NUCLEI OF MASS 18 AND 19 [J].

ELLIOTT, JP ;

FLOWERS, BH .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1955, 229 (1179) :536-563

[10] SHELL-MODEL CALCULATIONS OF B(E2) VALUES IN S-D SHELL NUCLEI WITH A = 18-22 [J].

HALBERT, EC ;

MCGRORY, JB ;

WILDENTHAL, BH .

PHYSICAL REVIEW LETTERS, 1968, 20 (20) :1112-+

← 1 2 3 4 →