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Title: Neutron Transfer Reactions for Deformed Nuclei Using A Sturmian Basis

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Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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Conference: Presented at: Shapes and Dynamics of Atomic Nuclei: Contemporary Aspects, Sofia, Bulgaria, Oct 05 - Oct 07, 2017
Country of Publication:
United States

Citation Formats

Gueorguiev, V G, and Escher, J E. Neutron Transfer Reactions for Deformed Nuclei Using A Sturmian Basis. United States: N. p., 2017. Web.
Gueorguiev, V G, & Escher, J E. Neutron Transfer Reactions for Deformed Nuclei Using A Sturmian Basis. United States.
Gueorguiev, V G, and Escher, J E. 2017. "Neutron Transfer Reactions for Deformed Nuclei Using A Sturmian Basis". United States. doi:.
title = {Neutron Transfer Reactions for Deformed Nuclei Using A Sturmian Basis},
author = {Gueorguiev, V G and Escher, J E},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month =

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  • In a recent communication we pointed out that one can combine the macroscopic model for two-particle transfer reactions on deformed nuclei with the sudden limit approximation for rotational excitation, and thereby obtain a practical method for calculating transfer reactions leading to high-spin states. As an example, we presented results for the reaction WSDy(VYNi,WNi) WDy populating the ground-state rotational band up to the spin I = 14 state. We have also tested the validity of the sudden limit for the inelastic excitation of high spin states and we have noted how the macroscopic model may be modified to allow for moremore » microscopic nuclear structure effects in an application to diabolic pair-transfer processes. This paper describes our subsequent work in which we investigated the systematic features of pair-transfer reactions within the macroscopic model by using heavier projectiles to generate higher spins and by decomposing the cross sections according to the multipolarity of the transfer interaction. Particular attention is paid to characteristic structures in the angular distributions for the lower spin states and how they depend on the angular momentum carried by the transferred particles. 11 refs., 3 figs.« less
  • Neutron transfer reactions were performed in inverse kinematics using radioactive ion beams of 132Sn, 130Sn, and 134Te and deuterated polyethylene targets. Preliminary results are presented. The Q-value spectra for 133Sn, 131Sn and 135Te reveal a number of previously unobserved peaks. The angular distributions are compatible with the expected lf7/2 nature of the ground state of 133Sn, and 2p3/2 for the 3.4 MeV state in 131Sn.
  • Recent developments discussed include: alpha-transfer reactions on deformed nuclei, quasi-elastic neutron transfer reactions induced by /sup 58/Ni beams on spherical and deformed samarium nuclei, and the population of low-lying states in neutron rich nuclei using (particle,..gamma..) or (particle,e) coincidence methods. 37 refs., 10 figs. (LEW)
  • Cross sections have been determined for direct excitation, ionization, and electron transfer in collisions between H, He, Li, and Be nuclei and C{sup 5+}(1s) target ions at nuclear energies 1-24 MeV/nucleon, extending earlier work [Phys. Rev. A 56, 2903 (1997)] to higher energies. Coupled Sturmian pseudostates of principal quantum number at least up to 30 have been included for each angular momentum s, p, d, and f centered on the C nucleus, as well as a 1s state centered on the projectile. Detailed basis-convergence studies have been carried out. Cross sections have been compared with the corresponding Born results, andmore » scaling rules have also been examined.« less
  • Cross sections have been determined for electron transfer and ionization in collisions between H{sup +}, He{sup 2+}, Li{sup 3+}, Be{sup 4+}, B{sup 5+}, C{sup 6+}, N{sup 7+} ions and target C{sup 5+}(1s) ions for projectile energies 125{endash}1000 keV/amu using a coupled-Sturmian-pseudostate approach [Phys. Rev. A {bold 35}, 3799 (1987)]. A comparison is made with results using simpler approaches, and rules for scaling with the projectile nuclear charge are considered. Except for H{sup +}, the results for electron transfer to the ground state are estimated to be converged to 1{percent}; for ionization, the convergence is probably to 10{endash}20thinsp{percent}. {copyright} {ital 1997}more » {ital The American Physical Society}« less