Intermediate Energy Coulomb Excitation of Neutron-Rich Nuclei

We reinvestigate the collective effects of the retardation as well as the bending on the Coulomb excitation cross sections and also on the B(E2) strengths of some neutron-rich isotopes using the intermediate energy Coulomb excitation theory. It is found that the B(E2) strengths extracted from the experimental Coulomb excitation cross section data get suppressed approximately by 6%. Furthermore, the obtained B(E2) strengths in the energy range 30–100 MeV/A are found to be in better agreement with the corresponding values known from other sources, than those obtained by using the recoil-corrected relativistic Coulomb excitation theory.

[1]  H. Esbensen Coulomb excitation at intermediate energies , 2008, 0808.0361.

[2]  T. Motobayashi,et al.  On the analysis of intermediate–energy Coulomb excitation experiments , 2007, 0712.0484.

[3]  C. Bertulani,et al.  Coulomb excitation of unstable nuclei at intermediate energies , 2007, 0704.0060.

[4]  R. Janssens,et al.  Measurement of E2 transition strengths in {sup 32,34}Mg , 2005 .

[5]  Paul F. Mantica,et al.  Reduced transition probabilities to the first 2+ state in 52,54,56Ti and development of shell-closures at N = 32, 34 , 2005 .

[6]  D. Bazin,et al.  Detailed experimental study on intermediate-energy Coulomb excitation of 46 Ar , 2003 .

[7]  C. Bertulani,et al.  Intermediate energy Coulomb excitation as a probe of nuclear structure at radioactive beam facilities , 2003, nucl-th/0305001.

[8]  B. Pritychenko,et al.  B(E2;0+g.S.→2+1) in 26Si and mirror symmetry in the A=26 system , 2001 .

[9]  T. Glasmacher Intermediate-energy Coulomb excitation , 2001 .

[10]  F. Nowacki,et al.  Shell model studies of neutron-rich nuclei , 2000, nucl-th/0011010.

[11]  R. Ronningen,et al.  Role of intruder configurations in Ne and Mg , 1999 .

[12]  B. A. Brown,et al.  QUADRUPOLE COLLECTIVITY IN 32,34,36,38SI AND THE N = 20 SHELL CLOSURE , 1998 .

[13]  Steiner,et al.  New Region of Deformation: The Neutron-Rich Sulfur Isotopes. , 1996, Physical review letters.

[14]  C. Bertulani,et al.  Coulomb excitation in intermediate-energy collisions , 1989 .

[15]  P. Tikkanen,et al.  TRANSITION PROBABILITY FROM THE GROUND TO THE FIRST-EXCITED 2+ STATE OF EVEN–EVEN NUCLIDES , 2001 .

[16]  A. Winther,et al.  Relativistic coulomb excitation , 1979 .