Low-lying magnetic excitations of doubly-closed-shell nuclei and nucleon-nucleon effective interactions

被引：17

作者：

De Donno, V. ^{[1
,2
]}

Co, G. ^{[1
,2
]}

Maieron, C. ^{[1
,2
]}

Anguiano, M. ^{[3
]}

Lallena, A. M. ^{[3
]}

Moreno Torres, M. ^{[3
]}

机构：

[1] Univ Salento, Dipartimento Fis, I-73100 Lecce, Italy

[2] Ist Nazl Fis Nucl, Sez Lecce, I-73100 Lecce, Italy

[3] Univ Granada, Dept Fis Atom Mol & Nucl, E-18071 Granada, Spain

来源：

PHYSICAL REVIEW C | 2009年 / 79卷 / 04期

关键词：

HIGH-SPIN STATES; INELASTIC ELECTRON-SCATTERING; NEUTRINO OSCILLATIONS; M1; TRANSITION; FORM-FACTOR; TENSOR; ELECTROEXCITATION; C-12; EXCHANGE; CA-48;

D O I：

10.1103/PhysRevC.79.044311

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We have studied the low-lying magnetic spectra of C-12, O-16, Ca-40, Ca-48, and Pb-208 nuclei within the random phase approximation (RPA) theory, finding that the description of low-lying magnetic states of doubly-closed-shell nuclei imposes severe constraints on the spin and tensor terms of the nucleon-nucleon effective interaction. We first used four phenomenological effective interactions, and we obtained good agreement with the experimental magnetic spectra and, to a lesser extent, with the electron scattering responses. Then we made self-consistent RPA calculations to test the validity of the finite-range Gogny D1 interaction. For all the nuclei under study, we found that this interaction inverts the energies of all the magnetic states forming isospin doublets.

引用

页数：14

共 56 条

[11] ELECTROEXCITATION OF ISOSCALAR STATES IN O-16 [J].

BUTI, TN ;

KELLY, J ;

BERTOZZI, W ;

FINN, JM ;

HERSMAN, FW ;

HYDEWRIGHT, C ;

HYNES, MV ;

KOVASH, MA ;

KOWALSKI, S ;

LOURIE, RW ;

MURDOCK, B ;

NORUM, BE ;

PUGH, B ;

SARGENT, CP ;

TURCHINETZ, W ;

BERMAN, BL .

PHYSICAL REVIEW C, 1986, 33 (03) :755-775

[12] Toward a new parameterization of the Gogny force: Neutron matter and nuclear binding energies [J].

Chappert, F ;

Girod, M .

INTERNATIONAL JOURNAL OF MODERN PHYSICS E, 2006, 15 (02) :339-345

[13]

Co' G, 1998, NUOVO CIMENTO A, V111, P527

[14] THE ROLE OF THE SPIN-DEPENDENT PART OF THE NUCLEON NUCLEON EFFECTIVE INTERACTION IN THE EXCITATION OF MAGNETIC STATES OF PB-208 [J].

CO, G ;

LALLENA, AM .

NUCLEAR PHYSICS A, 1990, 510 (01) :139-161

[15] A MODEL FOR PARTICLE-EMISSION INDUCED BY ELECTRON-SCATTERING [J].

CO, G ;

KREWALD, S .

NUCLEAR PHYSICS A, 1985, 433 (03) :392-426

[16]

Co' G, 2006, ACTA PHYS POL B, V37, P2235

[17] Neutrino cross sections and nuclear structure [J].

Co', Giampaolo ;

De Donno, Viviana ;

Maieron, Chiara .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2009, 188 :136-138

[18] HIGH-RESOLUTION ELECTRON-SCATTERING FROM HIGH-SPIN STATES IN PB-208 [J].

CONNELLY, JP ;

DEANGELIS, DJ ;

HEISENBERG, JH ;

HERSMAN, FW ;

KIM, W ;

LEUSCHNER, M ;

MILLIMAN, TE ;

WISE, J ;

PAPANICOLAS, CN .

PHYSICAL REVIEW C, 1992, 45 (06) :2711-2722

[19]

De Donno V., 2008, THESIS U SALENTO

[20] Renormalized Fermi hypernetted chain approach in medium-heavy nuclei [J].

de Saavedra, F. Arias ;

Bisconti, C. ;

Co', G. ;

Fabrocini, A. .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2007, 450 (1-3) :1-95

← 1 2 3 4 5 6 →