Influence of the 6,7Li breakup process on the near barrier elastic scattering by heavy nuclei

被引：130

作者：

Maciel, AMM

Gomes, PRS

Lubian, J

Anjos, RM

Cabezas, R

Santos, GM

Muri, C

Moraes, SB

Neto, RL

Added, N

Carlin, N

Tenreiro, C

机构：

[1] Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ, Brazil

[2] Univ Sao Paulo, Inst Fis, BR-01498970 Sao Paulo, Brazil

[3] Univ Chile, Fac Ciencias, Dept Fis, Santiago 653, Chile

[4] Ctr Appl Studies Nucl Dev, Havana, Cuba

来源：

PHYSICAL REVIEW C | 1999年 / 59卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.59.2103

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：

Angular distributions of the elastic scattering of the Li-6,Li-7 On Ba-138 were measured, in the energy range 21 less than or equal to E(lab)less than or equal to 32 MeV. The analysis of the data was performed via the optical model, using the Woods-Saxon potential, in order to find the energy dependence of the real and imaginary parts of the nuclear potential. The existence of a threshold anomaly for the Li-7 scattering and its absence for the Li-6 one was observed. It is interpreted that the breakup of Li-6, with dissociation energy smaller that its first excited state, is responsible for the vanishing of the threshold anomaly. [S0556-2813(99)01404-1].

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页码：2103 / 2107

页数：5

相关论文

共 14 条

[1] ELASTIC-SCATTERING OF NI-58+AL-27 AT NEAR-BARRIER ENERGIES [J].

BRANDAN, ME ;

ALFARO, JR ;

MENCHACAROCHA, A ;

DELCAMPO, JG ;

SATCHLER, GR ;

STELSON, PH ;

KIM, HJ ;

SHAPIRA, D .

PHYSICAL REVIEW C, 1993, 48 (03) :1147-1151

[2] THE NUCLEAR 2-NEUTRON REMOVAL CROSS-SECTION OF LI-11 - A DYNAMIC POLARIZATION POTENTIAL APPROACH [J].

CANTO, LF ;

DONANGELO, R ;

HUSSEIN, MS ;

PATO, MP .

NUCLEAR PHYSICS A, 1992, 542 (01) :131-140

[3] ROLE OF THE BREAKUP PROCESS IN THE HINDRANCE OF LIGHT-HEAVY-ION FUSION REACTIONS [J].

FIGUEIRA, MCS ;

SZANTO, EM ;

DETOLEDO, AS ;

PATO, MP ;

HUSSEIN, MS ;

CANTO, LF .

PHYSICAL REVIEW C, 1992, 46 (03) :1139-1142

[4]

Fulton B. R., 1991, Heavy Ion Collisions at Energies Near the Coulomb Barrier 1990. Proceedings of Workshop, P15

[5] Polarization potentials for the 208Pb(7Li,6Li)209Pb transfer [J].

Keeley, N ;

Rusek, K .

PHYSICAL REVIEW C, 1997, 56 (06) :3421-3422

[6] OPTICAL-MODEL ANALYSES OF LI-6,LI-7+PB-208 ELASTIC-SCATTERING NEAR THE COULOMB BARRIER [J].

KEELEY, N ;

BENNETT, SJ ;

CLARKE, NM ;

FULTON, BR ;

TUNGATE, G ;

DRUMM, PV ;

NAGARAJAN, MA ;

LILLEY, JS .

NUCLEAR PHYSICS A, 1994, 571 (02) :326-336

[7] CAUSALITY AND THE THRESHOLD ANOMALY OF THE NUCLEUS-NUCLEUS POTENTIAL [J].

MAHAUX, C ;

NGO, H ;

SATCHLER, GR .

NUCLEAR PHYSICS A, 1986, 449 (02) :354-394

[8] Elastic, inelastic scattering and fusion of the 14N+59Co system at energies close to the Coulomb barrier [J].

Muri, C ;

Anjos, RM ;

Cabezas, R ;

Gomes, PRS ;

Moraes, SB ;

Maciel, AMM ;

Santos, GM ;

Lubian, J ;

Sant'Anna, MM ;

Tenreiro, C ;

Neto, RL ;

Acquadro, JC ;

Freitas, PAB .

EUROPEAN PHYSICAL JOURNAL A, 1998, 1 (02) :143-149

[9] DISPERSION-RELATION AND THE LOW-ENERGY BEHAVIOR OF THE HEAVY-ION OPTICAL-POTENTIAL [J].

NAGARAJAN, MA ;

MAHAUX, CC ;

SATCHLER, GR .

PHYSICAL REVIEW LETTERS, 1985, 54 (11) :1136-1138

[10]

RAYNAL J, 1989, WORKSH APPL NUCL THE, P506