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2024年10月30日
Chinese Physics C> 1982, Vol. 6> Issue(3) : 355-364 

STUDY OF ANOMALOUS LARGE ANGLE α-SCATTERING ON 24Mg

  • Angular distribution for the elastic and some inelstic scattering of α particle on24Mg isotope between 12°and 178°in steps of 2°(Lab) have been measured at 18.1MeV α bombarding energy. α+24Mg elastic scattering angular distribution at back-ward angles displays more pronounced oscillation and a strong overall rise of crosssection. The calculation by the standard optical model together with compound nuclearscattering (via H-F) cannot predict this anomalous enhancement. The calculation byuse of an L-dependent imaginary potential optical model is in good agreement withthe experimental data. The fits of L-dependent optical model to the experimentalangular distributions of other energies are also discussed.
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    [1] J. B. ECK et al., and refernces cited therein Nucl. Phys.,A255(1975),157.[2] H. Friedrich et al., Phys. Lett., 55B(1975), 345.[3] R. Stock, Phys. Rev., C6(1972),1226.[4] Proceedings of the Symposium on Four-nucleon correclations and alpha rototor structure. Marburg Germany 1972 editer by R, stock.[5] A. Budzanowski et al., The alpha-nucleus interaction, Report No 870/PL Cracow, Poland,1975.[6] E. Labic of al., Nucl. Phys., A135 (1969 ),145 ; H. Oeschler et al.,Nucl. Phys., A202(1973),513.[7] K. Langanke et al., Nucl. Phys., A302(1978),134.[8] H. Friendrich et al., Nucl. Phys., A252(1975),47.[9] H. Friendrich et al., Nucl. Phys., A291(1977),249.[10] J. V. Noble, H. T. Coelho, Phys. Rev., C3(1971), 1840.[11] D. Agassi, N. S. Wall, Phys. Rev., C7(1973), 1368.[12] Yoeio. KONDO et al., Prog. Theor.Phys., 53(1975), 1006.[13] N. S. Wall et al., Phys. Rev., C14(1976), 2326.[14] E. A. Eberhard, Phys. Lett., 33B(1970), 343[15] E. Labie, Nucl. Phys., A205(1973), 81.[16] H. P. Guber, Phys. Lett., 74(1978), 202.[17] D. M. Brink, Nucl. Phys., A279(1977), 159.[18] K. A. Eberhard, Phys. Rev. Lett., 43(1979), 107.[19] J. Lega, Nucl. Phys., A218(1974), 429.[20] A. E. AHTPONOB. Bull Aeao SCI USER. Phys. Ser, 38 No. 10(1974), 2173.[21] A. G. Drentje Phys. Lett., 32B(1970), 356.[22] K. A. Eberhard, Nucl. Phys., A193(1972), 489.[23] 袁坚,迥旋加速器外束能量监测器内部资料[24] 袁容芳等a+24,25,26Mg大角反常散射及同位素效应原子核物理待印[25] 何音、庄斐,光学模型计算程序科技成果报告1976.[26] 田野HF-2计算程序(内部资料[27] R. A. Cliatwin et al., Phys. Rev., Cl(1970), 795.[28] 庄斐, 角动量相关吸收势光学模型内部资料[29] B. A. Eberhard et al., Phys. Rev.; C14(1976), 548.[30] C. B. Fnlmer et al., Phys. Rev., C18(1978), 621.

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YUAN JIAN, YUAN RONG-FANG, HUANG BING-YIN, WANG XIN-LIN, WANG YUAN-DA, ZHUANG FEI and JIANG SI-YUAN. STUDY OF ANOMALOUS LARGE ANGLE α-SCATTERING ON 24Mg[J]. Chinese Physics C, 1982, 6(3): 355-364.
YUAN JIAN, YUAN RONG-FANG, HUANG BING-YIN, WANG XIN-LIN, WANG YUAN-DA, ZHUANG FEI and JIANG SI-YUAN. STUDY OF ANOMALOUS LARGE ANGLE α-SCATTERING ON 24Mg[J]. Chinese Physics C, 1982, 6(3): 355-364. shu
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Received: 1981-09-05
Revised: 1900-01-01
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STUDY OF ANOMALOUS LARGE ANGLE α-SCATTERING ON 24Mg

  • Received Date: 1981-09-05
  • Accepted Date: 1900-01-01
  • Available Online: 1982-06-05

Abstract: Angular distribution for the elastic and some inelstic scattering of α particle on24Mg isotope between 12°and 178°in steps of 2°(Lab) have been measured at 18.1MeV α bombarding energy. α+24Mg elastic scattering angular distribution at back-ward angles displays more pronounced oscillation and a strong overall rise of crosssection. The calculation by the standard optical model together with compound nuclearscattering (via H-F) cannot predict this anomalous enhancement. The calculation byuse of an L-dependent imaginary potential optical model is in good agreement withthe experimental data. The fits of L-dependent optical model to the experimentalangular distributions of other energies are also discussed.

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