Zobrazeno 1 - 10
of 449
pro vyhledávání: '"Mitchell,G. E."'
Recent analyses of the distribution of reduced neutron widths in the Nuclear Data Ensemble (NDE) and in the Pt isotopes find strong disagreement with predictions of random-matrix theory. These analyses combine the maximum-likelihood method with a cut
Externí odkaz:
http://arxiv.org/abs/1209.2439
Autor:
Toft, H. K., Larsen, A. C., Agvaanluvsan, U., Bürger, A., Guttormsen, M., Mitchell, G. E., Nyhus, H. T., Schiller, A., Siem, S., Syed, N. U. H., Voinov, A.
Publikováno v:
Phys.Rev.C81:064311,2010
The nuclear level densities of $^{118,119}$Sn and the $\gamma$-ray strength functions of $^{116,118,119}$Sn below the neutron separation energy are extracted with the Oslo method using the ($^3$He, \,$\alpha \gamma$) and ($^3$He,$^3$He$^\prime\gamma$
Externí odkaz:
http://arxiv.org/abs/1006.4781
Publikováno v:
Rev. Mod. Phys. 82 (2010) 2845
The application of random-matrix theory (RMT) to compound-nucleus (CN) reactions is reviewed. An introduction into the basic concepts of nuclear scattering theory is followed by a survey of phenomenological approaches to CN scattering. The implementa
Externí odkaz:
http://arxiv.org/abs/1001.2422
Autor:
Agvaanluvsan, U., Larsen, A. C., Guttormsen, M., Chankova, R., Mitchell, G. E., Schiller, A., Siem, S., Voinov, A.
Publikováno v:
Phys.Rev.C79:014320,2009
The nuclear level densities of 116,117Sn below the neutron separation energy have been determined experimentally from the (3He,alpha gamma) and (3He,3He gamma') reactions, respectively. The level densities show a characteristic exponential increase a
Externí odkaz:
http://arxiv.org/abs/0810.4406
Autor:
Agvaanluvsan, U., Larsen, A. C., Chankova, R., Guttormsen, M., Mitchell, G. E., Schiller, A., Siem, S., Voinov, A.
Publikováno v:
Phys.Rev.Lett.102:162504,2009
Radiative strength functions of 117Sn has been measured below the neutron separation energy using the (3He,3He'gamma) reactions. An increase in the slope of the strength functions around E_gamma= 4.5 MeV indicates the onset of a resonance-like struct
Externí odkaz:
http://arxiv.org/abs/0808.3648
Autor:
Algin, E., Agvaanluvsan, U., Guttormsen, M., Larsen, A. C., Mitchell, G. E., Rekstad, J., Schiller, A., Siem, S., Voinov, A.
Publikováno v:
Phys.Rev.C78:054321,2008
Nuclear level densities for $^{56,57}$Fe have been extracted from the primary $\gamma$-ray spectra using ($^3$He,$^3$He$^{\prime}\gamma$) and ($^3$He,$\alpha \gamma$) reactions. Nuclear thermodynamic properties for $^{56}$Fe and $^{57}$Fe are investi
Externí odkaz:
http://arxiv.org/abs/0808.3342
Autor:
Weidenmuller, H. A., Mitchell, G. E.
Publikováno v:
Rev.Mod.Phys.81:539-589,2009
The authors review the evidence for the applicability of random--matrix theory to nuclear spectra. In analogy to systems with few degrees of freedom, one speaks of chaos (more accurately: quantum chaos) in nuclei whenever random--matrix predictions a
Externí odkaz:
http://arxiv.org/abs/0807.1070
Autor:
Guttormsen, M., Chankova, R., Agvaanluvsan, U., Algin, E., Bernstein, L. A., Ingebretsen, F., Lonnroth, T., Messelt, S., Mitchell, G. E., Rekstad, J., Schiller, A., Siem, S., Larsen, A. C., Voinov, A., Odegaard, S.
The radiative strength functions of 96Mo have been reanalyzed. The enhanced gamma strength for E_gamma < 3 - 4 MeV is confirmed.
Comment: 2 figures
Comment: 2 figures
Externí odkaz:
http://arxiv.org/abs/0801.4667
Autor:
Kaneko, K., Hasegawa, M., Agvaanluvsan, U., Algin, E., Chankova, R., Guttormsen, M., Larsen, A. C., Mitchell, G. E., Rekstad, J., Schiller, A., Siem, S., Voinov, A.
Publikováno v:
Phys.Rev.C74:024325,2006
The S shape of the canonical heat capacity is known as a signature of the pairing transition and along an isotopic chain it is significantly more pronounced for nuclei with an even number of neutrons than with an odd number. Although the heat capacit
Externí odkaz:
http://arxiv.org/abs/nucl-th/0608002
Autor:
Voinov, A. V., Grimes, S. M., Agvaanluvsan, U., Algin, E., Belgya, T., Brune, C. R., Guttormsen, M., Hornish, M. J., Massey, T., Mitchell, G. E., Rekstad, J., Schiller, A., Siem, S.
Publikováno v:
Phys.Rev.C74:014314,2006; AIP Conf.Proc.819:545-549,2006
The $^{55}$Mn$(d,n)^{56}$Fe differential cross section is measured at $E_d=7$ MeV\@. The $^{56}$Fe level density obtained from neutron evaporation spectra is compared to the level density extracted from the $^{57}$Fe$(^3$He,$\alpha\gamma)^{56}$Fe rea
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0604002