@article{agvaanluvsan_larsen_chankova_guttormsen_mitchell_schiller_siem_voinov_2009, title={Enhanced Radiative Strength in the Quasicontinuum of Sn-117}, volume={102}, ISSN={["1079-7114"]}, DOI={10.1103/physrevlett.102.162504}, abstractNote={The radiative strength function of $^{117}\mathrm{Sn}$ has been measured up to the neutron separation energy using the ($^{3}\mathrm{He}$, $^{3}\mathrm{He}^{\ensuremath{'}}\ensuremath{\gamma}$) reaction. An increase in the slope of the strength function around ${E}_{\ensuremath{\gamma}}=4.5\text{ }\text{ }\mathrm{MeV}$ indicates the onset of a resonancelike structure, giving a significant enhancement of the radiative strength function compared to standard models in the energy region $4.5\ensuremath{\le}{E}_{\ensuremath{\gamma}}\ensuremath{\le}8.0\text{ }\text{ }\mathrm{MeV}$. For the first time, the functional form of this resonancelike structure has been measured in an odd tin nucleus below neutron threshold in the quasicontinuum region.}, number={16}, journal={PHYSICAL REVIEW LETTERS}, author={Agvaanluvsan, U. and Larsen, A. C. and Chankova, R. and Guttormsen, M. and Mitchell, G. E. and Schiller, A. and Siem, S. and Voinov, A.}, year={2009}, month={Apr} } @article{agvaanluvsan_larsen_guttormsen_chankova_mitchell_schiller_siem_voinov_2009, title={Evidence for the pair-breaking process in Sn-116,Sn-117}, volume={79}, ISSN={["1089-490X"]}, DOI={10.1103/physrevc.79.014320}, abstractNote={The nuclear level densities of $^{116,117}\mathrm{Sn}$ below the neutron separation energy have been determined experimentally from the $(^{3}\mathrm{He},\ensuremath{\alpha}\ensuremath{\gamma})$ and $(^{3}\mathrm{He},^{3}\mathrm{He}{}^{'}\ensuremath{\gamma})$ reactions, respectively. The level densities show a characteristic exponential increase and a difference in magnitude due to the odd-even effect of the nuclear systems. In addition, the level densities display pronounced step-like structures that are interpreted as signatures of subsequent breaking of nucleon pairs.}, number={1}, journal={PHYSICAL REVIEW C}, author={Agvaanluvsan, U. and Larsen, A. C. and Guttormsen, M. and Chankova, R. and Mitchell, G. E. and Schiller, A. and Siem, S. and Voinov, A.}, year={2009}, month={Jan} } @article{larsen_guttormsen_chankova_ingebretsen_lonnroth_messelt_rekstad_schiller_siem_syed_et al._2007, title={Nuclear level densities and gamma-ray strength functions in Sc-44,Sc-45}, volume={76}, number={4}, journal={Physical Review. C, Nuclear Physics}, author={Larsen, A. C. and Guttormsen, M. and Chankova, R. and Ingebretsen, F. and Lonnroth, T. and Messelt, S. and Rekstad, J. and Schiller, A. and Siem, S. and Syed, N. U. H. and et al.}, year={2007} }