Measurement of e2 transitions in the Coulomb dissociation of 8B

被引：72

作者：

Davids, B ^{[1
]}

Anthony, DW

Austin, SM

Bazin, D

Blank, B

Caggiano, JA

Chartier, M

Esbensen, H

Hui, P

Powell, CF

Scheit, H

Sherrill, BM

Steiner, M

Thirolf, P

Yurkon, J

Zeller, A

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[3] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

[4] CEN Bordeaux Gradignan, F-33175 Gradignan, France

[5] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[6] Univ Munchen, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.81.2209

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In an effort to understand the implications of Coulomb dissociation experiments for the determination of the Be-7(p, gamma)B-8 reaction rate, longitudinal momentum distributions of 7Be fragments produced in the Coulomb dissociation of 44 and 81 MeV/nucleon B-8 beams on a Ph target were measured. These distributions are characterized by asymmetries interpreted as the result of interference between E1 and E2 transition amplitudes in the Coulomb breakup. When interpreted in the context of a first order perturbation theory of Coulomb dissociation that assumes a single particle B-8 structure model, this measurement yields S-E2/S-E1 = 6.7(-1.9)(+2.8) x 10(-4) at a fragment relative kinetic energy of 0.6 MeV.

引用

页码：2209 / 2212

页数：4

共 26 条

[1]

ADELBERGER E, IN PRESS REV MOD PHY

[2]

Bahcall J.N., 1989, Neutrino Astrophysics

[3] THE ASTROPHYSICAL REACTIONS C-12(ALPHA,GAMMA)O-16 AND BE-7(P,GAMMA)B-8 AND COULOMB DISSOCIATION EXPERIMENTS [J].

BERTULANI, CA .

PHYSICAL REVIEW C, 1994, 49 (05) :2688-2694

[4] RECONSTRUCTIVE CORRECTION OF ABERRATIONS IN NUCLEAR-PARTICLE SPECTROGRAPHS [J].

BERZ, M ;

JOH, K ;

NOLEN, JA ;

SHERRILL, BM ;

ZELLER, AF .

PHYSICAL REVIEW C, 1993, 47 (02) :537-544

[5] INTERFERENCE EFFECTS IN THE COULOMB DISSOCIATION OF B-8 [J].

ESBENSEN, H ;

BERTSCH, GF .

PHYSICS LETTERS B, 1995, 359 (1-2) :13-16

[6] Effects of E2 transitions in the Coulomb of B-8 [J].

Esbensen, H ;

Bertsch, GF .

NUCLEAR PHYSICS A, 1996, 600 (01) :37-62

[7] MEASUREMENT OF THE BE-7(P,GAMMA)B-8 REACTION CROSS-SECTION AT LOW ENERGIES [J].

FILIPPONE, BW ;

ELWYN, AJ ;

DAVIDS, CN ;

KOETKE, DD .

PHYSICAL REVIEW LETTERS, 1983, 50 (06) :412-416

[8] E2 CONTRIBUTION TO THE B-8-]P+BE-7 COULOMB DISSOCIATION CROSS-SECTION - COMMENT [J].

GAI, MS ;

BERTULANI, CA .

PHYSICAL REVIEW C, 1995, 52 (03) :1706-1708

[9]

GEISSEL H, 1995, ANNU REV NUCL PART S, V45, P163

[10] New measurement and analysis of the 7Be(p,γ)8Be cross section [J].

Hammache, F ;

Bogaert, G ;

Aguer, P ;

Angulo, C ;

Barhoumi, S ;

Brillard, L ;

Chemin, JF ;

Claverie, G ;

Coc, A ;

Hussonnois, M ;

Jacotin, M ;

Kiener, J ;

Lefebvre, A ;

Scheurer, JN ;

Thibaud, JP ;

Virassamynaiken, E .

PHYSICAL REVIEW LETTERS, 1998, 80 (05) :928-931

← 1 2 3 →