Статья

Two-neutron transfer in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">He</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">Bi</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>209</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>reaction near the Coulomb barrier

P. DeYoungDepartment of Physics and Engineering, Hope College, Holland, Michigan 49423-9000Patrick J. MearsDepartment of Physics and Engineering, Hope College, Holland, Michigan 49423-9000J. J. KolataPhysics Department, University of Notre Dame, Notre Dame, Indiana, 46556-5670E. F. AguileraDepartamento del Acelerador, Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, C.P. 11801, Mexico, D.FF. D. BecchettiPhysics Department, University of Michigan, Ann Arbor, Michigan 48109-1120Y. ChenPhysics Department, University of Michigan, Ann Arbor, Michigan 48109-1120M. CloughesyPhysics Department, University of Notre Dame, Notre Dame, Indiana, 46556-5670H. C. GriffinPhysics Department, University of Michigan, Ann Arbor, Michigan 48109-1120C. J. GuessDepartment of Physics and Engineering, Hope College, Holland, Michigan 49423-9000J. HinnefeldPhysics Department, Indiana University South Bend, South Bend, Indiana 46634-7111H. JiangPhysics Department, University of Michigan, Ann Arbor, Michigan 48109-1120Scott R. JonesDepartment of Chemistry, Southwest Missouri State University, Springfield, Missouri 65804-0094Utsab KhadkaDepartment of Physics and Engineering, Hope College, Holland, Michigan 49423-9000D. LizcanoDepartamento del Acelerador, Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, C.P. 11801, Mexico, D.FE. Martínez-QuirozDepartamento del Acelerador, Instituto Nacional de Investigaciones Nucleares, A.P. 18-1027, C.P. 11801, Mexico, D.FM. OjaniegaPhysics Department, University of Michigan, Ann Arbor, Michigan 48109-1120G. F. PeasleeDepartment of Chemistry, Hope College, Holland, Michigan 49423-9000A. de la PeñaDepartment of Physics and Engineering, Hope College, Holland, Michigan 49423-9000J. RiethDepartment of Physics and Engineering, Hope College, Holland, Michigan 49423-9000S. VanDenDriesschePhysics Department, Indiana University South Bend, South Bend, Indiana 46634-7111Jeffrey A. ZimmermanDepartment of Chemistry, Southwest Missouri State University, Springfield, Missouri 65804-0094

2005lv

ABI

Аннотация

The cross section for \ensuremath{\alpha}-particle emission in the $^{6}\mathrm{He}+^{209}\mathrm{Bi}$ reaction at energies near the Coulomb barrier is remarkably large. Possible reactions that may produce the observed \ensuremath{\alpha} particles include two-neutron transfer, one-neutron transfer, and direct projectile breakup. Each of these mechanisms results in a distinctive angular correlation between the \ensuremath{\alpha} particle and the outgoing neutron(s). A neutron-\ensuremath{\alpha}-particle coincidence experiment was performed to study two-neutron transfer to unbound states of $^{211}\mathrm{Bi}$. It is shown that approximately 55% of the observed \ensuremath{\alpha}-particle yield at and beyond the grazing angle is because of this process. This is more than 2.5 times the fraction attributable to single-neutron transfer. The corresponding 2n-transfer cross section is 0.4 \ifmmode\pm\else\textpm\fi{} 0.1 b.

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Идентификаторы

DOI: 10.1103/physrevc.71.051601

Цитирования и источники

Цитирований: 2Использованных источников: 0

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