Shape changes at high spin in 78Kr.

Authors :: Dhal, A.
K. Sinha, R.
Agarwal, P.
Kumar, S.
Singh, B. B.
Kumar, R.
Bringel, P.
Neusser, A.
Golda, K. S.
Singh, R. P.
Muralithar, S.
Madhavan, N.
Das, J. J.
Shukla, A.
Raina, P. K.
Thind, K. S.
Sinha, A. K.
Govil, I. M.
Joshi, P. K.
Bhowmik, R. K.
Source :: European Physical Journal A -- Hadrons & Nuclei; Jan2006, Vol. 27 Issue 1, p33-36, 4p, 1 Diagram, 1 Chart, 5 Graphs
Publication Year :: 2006
Abstract: High-spin states in <superscript>78</superscript>Kr have been studied via the <superscript>63</superscript>Cu (<superscript>19</superscript>F, 2p2n)<superscript>78</superscript>Kr reaction at a beam energy of 60 MeV using the Indian National Gamma Array (INGA). In this nucleus, lifetimes have been measured upto the I <superscript>π</superscript>=22<superscript>+</superscript> level in the yrast positive-parity band and upto the I <superscript>π</superscript>=15<superscript>-</superscript> level in the negative-parity band using the Doppler Shift Attenuation Method (DSAM). The deduced transition quadrupole moments Q<subscript>t</subscript>'s are found to decrease with rotational frequency for both the bands. [ABSTRACT FROM AUTHOR]