FUSION CROSS-SECTIONS FOR ALPHA + CA-40, CA-44 AND THE PROBLEM OF ANOMALOUS LARGE-ANGLE SCATTERING

被引：34

作者：

EBERHARD, HA ^{[1
]}

APPEL, C ^{[1
]}

BANGERT, R ^{[1
]}

CLEEMANN, L ^{[1
]}

EBERTH, J ^{[1
]}

ZOBEL, V ^{[1
]}

机构：

[1] UNIV COLOGNE,INST KERNPHYS,D-5000 COLOGNE 41,FED REP GER

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 43卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.43.107

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Fusion cross sections for the reactions +Ca40 and +Ca44 have been measured between 10 and 27 MeV (lab) via the detection of the radiation of the evaporation residues. At maximum the cross sections are about 1170 mb for +Ca44 and about 970 mb for +Ca40. This difference supports recent optical-model and semiclassical interpretations that the well-known anomalous large-angle scattering results from different absorption strengths for these two systems. © 1979 The American Physical Society.

引用

页码：107 / 110

页数：4

共 12 条

[1] PARAMETRIZATION OF ENERGY-AVERAGED AND FINE-ENERGY-RESOLUTION CROSS SECTIONS FOR CA-40(ALPHA, ALPHA0)CA-40 REACTION 5.5 TO 17.5 MEV [J].

BISSON, AE ;

EBERHARD, KA ;

DAVIS, RH .

PHYSICAL REVIEW C, 1970, 1 (02) :539-+

[2] UNDAMPED SURFACE-WAVES IN SCATTERING OF O-16+SI-28 AT ECM =35 MEV [J].

BRAUNMUNZINGER, P ;

BERKOWITZ, GM ;

CORMIER, TM ;

JACHCINSKI, CM ;

HARRIS, JW ;

BARRETTE, J ;

LEVINE, MJ .

PHYSICAL REVIEW LETTERS, 1977, 38 (17) :944-947

[3] BARRIER PENETRATION EFFECTS IN SEMICLASSICAL THEORY OF ELASTIC-SCATTERING BETWEEN COMPLEX NUCLEI [J].

BRINK, DM ;

TAKIGAWA, N .

NUCLEAR PHYSICS A, 1977, 279 (01) :159-188

[4] ELASTIC AND INELASTIC-SCATTERING OF ALPHA-PARTICLES FROM CA-40,CA-44 OVER A BROAD RANGE OF ENERGIES AND ANGLES [J].

DELBAR, T ;

GREGOIRE, G ;

PAIC, G ;

CEULENEER, R ;

MICHEL, F ;

VANDERPOORTEN, R ;

BUDZANOWSKI, A ;

DABROWSKI, H ;

FREINDL, L ;

GROTOWSKI, K ;

MICEK, S ;

PLANETA, R ;

STRZALKOWSKI, A ;

EBERHARD, KA .

PHYSICAL REVIEW C, 1978, 18 (03) :1237-1248

[5] COMPOUND CONTRIBUTIONS IN ANOMALOUS BACK-ANGLE ELASTIC-SCATTERING OF ALPHA-PARTICLES FROM CA-40 AND CA-44 [J].

EBERHARD, KA ;

BRAID, TH ;

RENNER, T ;

SCHIFFER, JP ;

VIGDOR, S .

PHYSICAL REVIEW C, 1976, 14 (02) :548-552

[6] EXPLANATION OF ANOMALOUS BACKWARD ENHANCEMENT OF ELASTIC ALPHA-SCATTERING CROSS SECTIONS NEAR A=40 IN TERMS OF AN EXTENDED OPTICAL MODEL [J].

EBERHARD, KA .

PHYSICS LETTERS B, 1970, B 33 (05) :343-&

[7] SYSTEMATICS OF BACKWARD-ANGLE ELASTIC ALPHA-SCATTERING [J].

ECK, JS ;

THOMPSON, WJ ;

EBERHARD, KA ;

SCHIELE, J ;

TROMBIK, W .

NUCLEAR PHYSICS A, 1975, 255 (01) :157-172

[8] LIMITATION ON COMPLETE FUSION DURING HEAVY-ION COLLISIONS [J].

GLAS, D ;

MOSEL, U .

PHYSICAL REVIEW C, 1974, 10 (06) :2620-2622

[9] CRITICAL DISTANCE IN FUSION REACTIONS [J].

GLAS, D ;

MOSEL, U .

NUCLEAR PHYSICS A, 1975, A237 (03) :429-440

[10] LARGE-ANGLE ALPHA SCATTERING FROM CA-40 IS NOT ANOMALOUS [J].

GUBLER, HP ;

KIEBELE, U ;

MEYER, HO ;

PLATTNER, GR ;

SICK, I .

PHYSICS LETTERS B, 1978, 74 (03) :202-206

← 1 2 →