PHOTON-INDUCED PROTON KNOCKOUT FROM PB-208

被引：15

作者：

BOBELDIJK, I

VANDENABEELE, C

ADLER, JO

ANDERSSON, BE

ASCHENAUER, EC

DEBEVER, LJ

BRANFORD, D

BULYCHJOV, SA

DAVINSON, T

HANSEN, K

IRELAND, DG

ISAKSSON, L

IVANOV, D

JOHNSTONE, DG

KHANOV, A

LAPIKAS, L

LINDGREN, LJ

DEMEYER, G

NILSSON, B

RUIJTER, H

RYCKBOSCH, D

SANDELL, A

SHOTTER, AC

SCHRODER, B

VANDERSTEENHOVEN, G

SVENSSON, P

VANUDEN, MA

机构：

[1] LUND UNIV, DEPT PHYS, S-22362 LUND, SWEDEN

[2] UNIV EDINBURGH, DEPT PHYS & ASTRON, EDINBURGH EH9 3JZ, MIDLOTHIAN, SCOTLAND

[3] STATE UNIV GHENT, DEPT PHYS, B-9000 GHENT, BELGIUM

来源：

PHYSICS LETTERS B | 1995年 / 356卷 / 01期

关键词：

D O I：

10.1016/0370-2693(95)00793-K

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cross sections have been measured for the reaction Pb-208(gamma,p) leading to the low-lying (1/2(+), 3/2(+)) and (11/2(-), 5/2(+)) doublets 7/2(+) state in (207)T1 using a high energy-resolution tagged photon beam of 41 to 57 MeV. The data are compared with results obtained with the reaction Pb-208(e,e'p) in the same recoil-momentum range. The recoil-momentum distributions derived from the (gamma,p) data do not coincide with those obtained from the (e,e'p) data. Distorted-wave impulse-approximation (DWIA) calculations of which the input is constrained by the (e,e'p) data underestimate the (gamma,p) data by typically one order of magnitude. An estimate of meson-exchange currents (MEG) effects using the Siegert theorem brings the DWIA-calculations close to the data, Random-phase approximation calculations also give a fair account of the data, but in this case MEC-effects are predicted to be less important.

引用

页码：13 / 18

页数：6

共 41 条

[1] THE PHOTON TAGGING FACILITY AT THE MAX ACCELERATOR SYSTEM IN LUND [J].

ADLER, JO ;

ANDERSSON, BE ;

BLOMQVIST, KI ;

FORKMAN, B ;

HANSEN, K ;

ISAKSSON, L ;

LINDGREN, K ;

NILSSON, D ;

SANDELL, A ;

SCHRODER, B ;

ZIAKAS, K .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 294 (1-2) :15-25

[2] EXCHANGE CURRENTS IN ELECTRIC TRANSITIONS AND THE ROLE OF SIEGERTS THEOREM - A CASE-STUDY IN DEUTERON PHOTO-DISINTEGRATION [J].

ARENHOVEL, H .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1981, 302 (01) :25-30

[3]

ARENHOVEL H, 1991, FEW BODY SYSTEMS S3, V3

[4] NUCLEON-NUCLEUS OPTICAL-MODEL PARAMETERS, A]40, E[50-MEV [J].

BECCHETTI, FD ;

GREENLEES, GW .

PHYSICAL REVIEW, 1969, 182 (04) :1190-+

[5] SEARCH FOR NUCLEON-NUCLEON CORRELATIONS IN THE PROTON SPECTRAL-FUNCTION OF PB-208 [J].

BOBELDIJK, I ;

BLOK, HP ;

VANDENBRINK, HB ;

DODGE, GE ;

HESSELINK, EHA ;

JANS, E ;

KASDORP, WJ ;

LAPIKAS, L ;

VANLEEUWE, JJ ;

MARCHAND, C ;

ONDERWATER, G ;

PELLEGRINO, A ;

VANSAMBEEK, M ;

SPALTRO, CM ;

VANDERSTEENHOVEN, G ;

STEIJGER, JJM ;

TEMPLON, JA ;

VANUDEN, MA ;

DEVRIES, R ;

HUBERTS, PKAD .

PHYSICS LETTERS B, 1995, 353 (01) :32-38

[6] HIGH-MOMENTUM PROTONS IN PB-208 [J].

BOBELDIJK, I ;

BOUWHUIS, M ;

IRELAND, DG ;

DEJAGER, CW ;

JANS, E ;

DEJONGE, N ;

KASDORP, WJ ;

KONIJN, J ;

LAPIKAS, L ;

VANLEEUWE, JJ ;

VANDERMEER, RLJ ;

NOOREN, GJL ;

PASSCHIER, E ;

SCHROEVERS, M ;

VANDERSTEENHOVEN, G ;

STEIJGER, JJM ;

THEUNISSEN, JAP ;

VANUDEN, MA ;

DEVRIES, H ;

DEVRIES, R ;

HUBERTS, PKAD ;

BLOK, HP ;

VANDENBRINK, HB ;

DODGE, GE ;

HARAKEH, MN ;

HESSELINK, WHA ;

KALANTARNAYESTANAKI, N ;

PELLEGRINO, A ;

SPALTRO, CM ;

TEMPLON, JA ;

HICKS, RS ;

KELLY, JJ ;

MARCHAND, C .

PHYSICAL REVIEW LETTERS, 1994, 73 (20) :2684-2687

[7] DIRECT MECHANISM IN MEDIUM ENERGY (GAMMA,PO) REACTIONS [J].

BOFFI, S ;

GIUSTI, C ;

PACATI, FD .

NUCLEAR PHYSICS A, 1981, 359 (01) :91-108

[8]

BRIGHT TB, 1994, PHYS REV C, V49, P2182

[9] PHOTOREACTIONS OF C-12, O-16 AND CA-40 IN SELF-CONSISTENT RPA THEORY .2. UNPOLARIZED (GAMMA,P) AND (GAMMA,N) ANGULAR-DISTRIBUTIONS BELOW PION THRESHOLD [J].

CAVINATO, M ;

MARANGONI, M ;

SARUIS, AM .

NUCLEAR PHYSICS A, 1984, 422 (02) :237-272

[10]

DEBEVER LJ, 1993, THESIS U UTRECHT

← 1 2 3 4 5 →