STUDY OF ANGULAR DISTRIBUTION OF THE SCATTERING OF 31.2 MeV α PARTICLE BY THE NUCLEUS 10.11B

  • Angular distribution of the scattering of 31.2 MeV-α-particle by the nucleus 10,11B is measured. Our results show that there is anomalous phenomenon in the case of 10B but there is not in 11B. Calculations and analysis are made with the optical model adding the Regge-Pole model. The results show that for the nucleus of 1p-shell, such as α+16O, the result of the calculation agrees very well with the experimental measurements but it fails in α+10B. As to the analysis with the double v-power optieal model for α+16O, the agreement is somewhat a little worse than the former's and the result for α+10B agrees only qualitatively with the experimental measurement. It is well known that the analysis with these models for α+40Ca agrees very well with the experimental data. Thus we may come to the conclusion that the mechanism of ALAS of the nucleus of 2s-1d shell is different from that of 1p-shell, and the mechanisms of ALAS of the nuclei of 1p-shell are also different.
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  • [1] F. Miehel and R. Vanderpoorten, Phys, Rev., C16(1977), 142.[2] W. G. Love, Phys. Rev., C17(1978), 1876.[3] T. 9rokowaki et al., Acta Physica Polonica, B11(1980), 439.[4] D. M. Brink and N. Takigawa, Nucl. Phys., A279(1979), 159.[5] Н. С. Зеленская идр ИАНСССР, Т-43 (11) (1979), 421.[6] 孔祥傲等,《1978年低能核物理会议资料选编》,39.[7] К. И. Кузнецов идр, Я. Ф., 20 (1974), 632.[8] H. Oeacher et al., Nucl. Phys., A202(1973), 513.[9] N. P. David et al., Nucl. Phys., A182(1972), 234.[10] F. Soga et al., Phys. Rev,, C18(1978).2457,[11] H. A . Eberhard et al., Phys. Rev. Lett., 43(1979), 107.
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Get Citation
KONG XIANG-JING, XIE XIAN-LIANG, SUN CHONG-WEN, BAO ZHENG-KAI and WANG ZHEN-XIA. STUDY OF ANGULAR DISTRIBUTION OF THE SCATTERING OF 31.2 MeV α PARTICLE BY THE NUCLEUS 10.11B[J]. Chinese Physics C, 1981, 5(5): 600-606.
KONG XIANG-JING, XIE XIAN-LIANG, SUN CHONG-WEN, BAO ZHENG-KAI and WANG ZHEN-XIA. STUDY OF ANGULAR DISTRIBUTION OF THE SCATTERING OF 31.2 MeV α PARTICLE BY THE NUCLEUS 10.11B[J]. Chinese Physics C, 1981, 5(5): 600-606. shu
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Received: 1980-11-11
Revised: 1900-01-01
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STUDY OF ANGULAR DISTRIBUTION OF THE SCATTERING OF 31.2 MeV α PARTICLE BY THE NUCLEUS 10.11B

Abstract: Angular distribution of the scattering of 31.2 MeV-α-particle by the nucleus 10,11B is measured. Our results show that there is anomalous phenomenon in the case of 10B but there is not in 11B. Calculations and analysis are made with the optical model adding the Regge-Pole model. The results show that for the nucleus of 1p-shell, such as α+16O, the result of the calculation agrees very well with the experimental measurements but it fails in α+10B. As to the analysis with the double v-power optieal model for α+16O, the agreement is somewhat a little worse than the former's and the result for α+10B agrees only qualitatively with the experimental measurement. It is well known that the analysis with these models for α+40Ca agrees very well with the experimental data. Thus we may come to the conclusion that the mechanism of ALAS of the nucleus of 2s-1d shell is different from that of 1p-shell, and the mechanisms of ALAS of the nuclei of 1p-shell are also different.

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