A NEW TRANSITION BRANCH OF THE 5.2 SEC ISOMER IN <SUP>183</SUP>W

GUI Shou-Zao; LIU Jing-Yi; XIAO Gen-Lai; TIAN Jia-Qi

Chinese Physics C> 1986, Vol. 10> Issue(3) : 354-357

A NEW TRANSITION BRANCH OF THE 5.2 SEC ISOMER IN ¹⁸³W

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Abstract：
During the bombardment of 14.8MeV neutron on natural wolfram samples a γ-ray with energy 291.7keV and halflife 5.17±0.03 sec is observed. From the experimental facts it is assumed that in addition to the two well known transition branches from the decay of 5.2 sec isomer in ¹³⁸W there exists another 11/2⁺11/2[615]→5/2^－3/2[512] isomeric (E3) transition. The hindrance factor of this new transition is calculated. It is well cosistent with the general empirical rule of k^－ forbidden isomeric transition.

References

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肖根来等, r射线的多谱分析方法, 3(1985)42.[2] Agda Arma-Chohen, Nucl. Data Sheets, 16(1975), 267.[3] C. M: Lederer etc. Table of Isotopes, (1978), p. 1154.[4] 刘运柞主编, , 常用放射性核素衰变纲图, p, 242.[5] R. S. Halter and E. C. Seltzer CAT-63-60, (1967) .[6] A. J. Poe Phil. Mag., 46(1955),611.[7] W. D. Schmidt-Ott etc. Z. Phys. 162(1961), 329.[8] G J. Gallagher etc. Nucl. Phys., 24(1961), 422.[9] W. Andte9tscheff etc. Atom. Data and Nucl. Data Table, 16(1975), 515.[10] Kai Siegbahp, Alpha-Beta and Gamma-Ray Spectsoscopy, VoI. 2(1965), p. 931.[11] О. Бop, Б. Moттeльcон, Aтомная 3нepzuя, 4(1963), 41.[12] M. E. Bunker etc., Rev. Mod. Phys., 43(1971); 348.[13] R. F. Casten etc., Mat. Fys. Medd. Dan., Vid. Selsk, 38(1972), No: 13.

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GUI Shou-Zao, LIU Jing-Yi, XIAO Gen-Lai and TIAN Jia-Qi. A NEW TRANSITION BRANCH OF THE 5.2 SEC ISOMER IN ¹⁸³W[J]. Chinese Physics C, 1986, 10(3): 354-357.

GUI Shou-Zao, LIU Jing-Yi, XIAO Gen-Lai and TIAN Jia-Qi. A NEW TRANSITION BRANCH OF THE 5.2 SEC ISOMER IN ¹⁸³W[J]. Chinese Physics C, 1986, 10(3): 354-357. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

A NEW TRANSITION BRANCH OF THE 5.2 SEC ISOMER IN ¹⁸³W

Corresponding author: GUI Shou-Zao,

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1986-06-05

Abstract: During the bombardment of 14.8MeV neutron on natural wolfram samples a γ-ray with energy 291.7keV and halflife 5.17±0.03 sec is observed. From the experimental facts it is assumed that in addition to the two well known transition branches from the decay of 5.2 sec isomer in ¹³⁸W there exists another 11/2⁺11/2[615]→5/2^－3/2[512] isomeric (E3) transition. The hindrance factor of this new transition is calculated. It is well cosistent with the general empirical rule of k^－ forbidden isomeric transition.