Irshad Ahmad 2006 Phys. Scr. 2006 78 doi:10.1088/0031-8949/2006/T125/017
Irshad Ahmad
Show affiliationsIn recent years, we have studied the structure of transcurium nuclei using the best available actinide sources and state-of-the-art instruments. These include the largest amount of high-purity samples produced in the High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory and the GAMMASPHERE spectrometer located at Argonne. Proton single-particle states in 249Bk were investigated by measuring the γ-ray spectra of an extremely pure 253Es sample and reactor-produced 249Cm sources. Neutron single-particle states were identified in 251Cf by measuring γ-ray spectra of 255Fm sources and a cyclotron-produced 251Es source. By combining the results of these measurements with the results of one-nucleon transfer reactions, we were able to identify almost all the single-particle states up to 1 MeV excitation in 249Bk and 251Cf. The level energies in these nuclei are in good agreement with energies calculated with a Woods–Saxon potential and pairing interactions.
23.20.Lv gamma transitions and level energies
Issue T125 (July 2006)
Received 15 July 2005, accepted for publication 1 September 2005
Published 28 June 2006
Irshad Ahmad 2006 Phys. Scr. 2006 78
Hayato Miyagawa et al 2005 Phys. Scr. 2005 616
R Lambiotte and S Redner J. Stat. Mech. (2007) L10001
Miquel Montero J. Stat. Mech. (2007) P04002
Fumihiko Matsui et al 2009 J. Phys.: Conf. Ser. 190 012111
Emiel de Smit et al 2009 J. Phys.: Conf. Ser. 190 012161
Dylan Walker et al J. Stat. Mech. (2007) P06010
Hangfeng Ji et al 2007 Nanotechnology 18 445704
Jeong San Kim and Barry C Sanders 2008 J. Phys. A: Math. Theor. 41 495301
Iwan Jensen J. Stat. Mech. (2004) P10008