Weakly bound s(1/2) neutrons in the manybody pair correlation of neutron drip line nuclei
(2004) In Physical Review C (Nuclear Physics) 69(6). Abstract
 With a simplified model in the HartreeFockBogoliubov (HFB) approximation, the behavior of weakly bound s(1/2) neutrons in the manybody pair correlation is studied by solving the HFB equation in coordinate space with the correct asymptotic boundary conditions. It is shown that in oneneutron pickup reactions on the eveneven neutrondripline nuclei, which contain loosely bound s(1/2) neutrons, the strength of the s(1/2) neutron can appear both at a discrete state and in the lowenergy continuum spectra, with comparable strength. When there is no weakly bound discrete state, the continuum spectra may exhibit a sharp peak just above Ex=lambda, which originates from the resonantlike behavior of the upper component of the HFB radial wave... (More)
 With a simplified model in the HartreeFockBogoliubov (HFB) approximation, the behavior of weakly bound s(1/2) neutrons in the manybody pair correlation is studied by solving the HFB equation in coordinate space with the correct asymptotic boundary conditions. It is shown that in oneneutron pickup reactions on the eveneven neutrondripline nuclei, which contain loosely bound s(1/2) neutrons, the strength of the s(1/2) neutron can appear both at a discrete state and in the lowenergy continuum spectra, with comparable strength. When there is no weakly bound discrete state, the continuum spectra may exhibit a sharp peak just above Ex=lambda, which originates from the resonantlike behavior of the upper component of the HFB radial wave function, u(s1/2)(Eqp,r). This resonantlike behavior may be directly observed as an swave resonance close to Ex=/lambda in neutronscattering experiments on those nuclei. It is also shown that a very large rootmeansquare radius of loosely bound s(1/2) neutrons may appear also in the presence of manybody pair correlation, since the effective pair gap in weakly bound neutron orbits with low l values is much reduced. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/273391
 author
 HamamotoKuroda, Ikuko ^{LU} and Mottelson, BR
 organization
 publishing date
 2004
 type
 Contribution to journal
 publication status
 published
 subject
 in
 Physical Review C (Nuclear Physics)
 volume
 69
 issue
 6
 publisher
 American Physical Society
 external identifiers

 wos:000222391000010
 scopus:4043164908
 ISSN
 05562813
 DOI
 10.1103/PhysRevC.69.064302
 language
 English
 LU publication?
 yes
 id
 ffe0622fb7f84b3692fea523f3a9e6f9 (old id 273391)
 date added to LUP
 20071029 10:56:00
 date last changed
 20170101 06:54:58
@article{ffe0622fb7f84b3692fea523f3a9e6f9, abstract = {With a simplified model in the HartreeFockBogoliubov (HFB) approximation, the behavior of weakly bound s(1/2) neutrons in the manybody pair correlation is studied by solving the HFB equation in coordinate space with the correct asymptotic boundary conditions. It is shown that in oneneutron pickup reactions on the eveneven neutrondripline nuclei, which contain loosely bound s(1/2) neutrons, the strength of the s(1/2) neutron can appear both at a discrete state and in the lowenergy continuum spectra, with comparable strength. When there is no weakly bound discrete state, the continuum spectra may exhibit a sharp peak just above Ex=lambda, which originates from the resonantlike behavior of the upper component of the HFB radial wave function, u(s1/2)(Eqp,r). This resonantlike behavior may be directly observed as an swave resonance close to Ex=/lambda in neutronscattering experiments on those nuclei. It is also shown that a very large rootmeansquare radius of loosely bound s(1/2) neutrons may appear also in the presence of manybody pair correlation, since the effective pair gap in weakly bound neutron orbits with low l values is much reduced.}, articleno = {064302}, author = {HamamotoKuroda, Ikuko and Mottelson, BR}, issn = {05562813}, language = {eng}, number = {6}, publisher = {American Physical Society}, series = {Physical Review C (Nuclear Physics)}, title = {Weakly bound s(1/2) neutrons in the manybody pair correlation of neutron drip line nuclei}, url = {http://dx.doi.org/10.1103/PhysRevC.69.064302}, volume = {69}, year = {2004}, }