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Published: 2016-12-30
Abstract Views: 102
Views PDF: 29
DOI: https://doi.org/10.53747/jnst.v6i4.173
Issue
Vol. 6 No. 4 (2016)
Section
Articles
How to Cite
Nguyen , N. A., Nguyen , X. H., Pham , D. K., & Ho , H. T. (2016). First results in the study of level scheme for ¹⁷²Yb based on gamma-gamma coincidence spectrometer. Nuclear Science and Technology, 6(4), 26-31. https://doi.org/10.53747/jnst.v6i4.173

First results in the study of level scheme for ¹⁷²Yb based on gamma-gamma coincidence spectrometer

Nguyen Ngoc Anh1, Nguyen Xuan Hai1, Pham Dinh Khang2, Ho Huu Thang3
1 Nuclear Research Institute, VINATOM, 01 Nguyen Tu Luc, Dalat,
2 Hanoi University of Science and Technology, 01 Dai Co Viet, Hai Ba Trung, Hanoi
3 Nuclear Research Institute, VINATOM, 01 Nguyen Tu Luc, Dalat

Main Article Content

Abstract

Nuclear level scheme permits to determine nuclear level density, gamma strength function, and to evaluate nuclear models. In comparison to light nuclei, the structure of heavy nuclei is much more complicated because of their strong deformation. In order to study nuclear level scheme, gamma – gamma coincidence spectrometer with advantages of low Compton background and the ability of identifying correlated gamma transitionshas been often used. This paper presents the first results of an experimentalstudy of level scheme of 172Yb using gamma – gamma coincidence spectrometer at the Dalat Nuclear Research Institute.

Article Details

Keywords

gamma - gamma coincidence, nuclear level scheme, ¹⁷²Yb

References

[1] E. Library, Data for 172Yb, (n.d.). http://www.nndc.bnl.gov/useroutput/AR_A4F178AAB269037F2607147FEE83F735_1.html.
[2] W. Gelletly et al, The reaction 171 Yb(n, γ) 172 Yb and the level scheme of 172 Yb, J. Phys. G Nucl. Phys. 11, 1055–1085, 1985. doi:10.1088/0305-4616/11/9/014.
[3] R.C. Greenwood, C.W. Reich, S.H. Vegors, Level structure of 172Yb from the 171Yb(n, γ) reaction, Nucl. Phys. A. 252, 260–292, 1975. doi:10.1016/0375-9474(75)90499-6.
[4] S.T. Boneva, E. V Vasil’eva, Y.P. Popov, A.M. Sukhovoi, V.A. Khitrov, Two-quantum cascades of radiative neutron capture 1. Spectroscopy of excited states of complex nuclei in the neutron binding energy region, 1991.
[5] P.D. Khang, N.X. Hai, V.H. Tan, N.N. Dien, Gamma-gamma coincidence spectrometer setup for neutron activation analysis and nuclear structure studies, Nucl. Instruments Methods Phys. Res. Sect. A Accel. Spectrometers, Detect. Assoc. Equip. 634, 47–51, 2011. doi:10.1016/j.nima.2011.01.025.
[6] P.. Ember, T. Belgya, J.. Weil, G.. Molnár, Coincidence measurement setup for PGAA and nuclear structure studies, Appl. Radiat. Isot. 57, 573–577, 2002. doi:10.1016/S0969-8043(02)00137-9.
[7] A. Schiller, A. Voinov, E. Algin, J.A. Becker, L.A. Bernstein, P.E. Garrett, M. Guttormsen, R.O. Nelson, J. Rekstad, S. Siem, Low-energy M1 excitation mode in 172Yb, 2006. doi:10.1016/j.physletb.2005.12.043.