Direct Radiative Capture to Continuum States

HUO Yu-Kun; YUAN Zhu-Shu

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2024年10月30日

Chinese Physics C> 1992, Vol. 16> Issue(1) : 82-89

Direct Radiative Capture to Continuum States

HUO Yu-Kun ^, ,
YUAN Zhu-Shu

Nuclear Science Department,Fudan University,Shanghai 200433

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Abstract：
A formula for the calculation of the cross sections,of nuclear transition to continuum states induced by direct radiative capture of intermediate-energy proton is deduced.The transition amplitude includes two terms corresponding to potential-scattering to potential-scattering transitions and potential-scattering to resonance-scatting transitions,respectively.The model is compard with available experimental data of the ¹¹B(p,γ₁₉)¹²C reaction,and the results show that the direct capture mechanism is capable to account for the main features of the measured data within the reasonable parameter scope,and,in the present case,the contributions from two terms are of the same order of magnitude.The physical significance of the results is also discussed.

References

[1]

M. A. Kovash et al., Phys. Rev. Lett., 42(1979), 700.[2] J. T. Londergan and L. D. Ludeking, Phys. Rev.; C25(1982), 1722.[3] S. F. Tsai and S. T. Londergan, Phys. Rev. Lett., 43(1979), 576.[4] L. G. Arnold, Phys. Rev. Lett., 42(1979), 1253[5] Dean Halderson and R. J. Philpott, Phys. Rev. Lett., 46(1981), 100.[6] R. J. Philpott and Dean Halderson, Nucl. Phys., A375(1982), 169.[7] H. R. Weller et al., Phys. Rev., C25(1982), 2921:[8] M. Nomachi et al., Phys. Rev., C9(1985), 242.[9] A. Anghinolfi et al., Nucl. Phys., A399(1983), 66.[10] D. Dowel et al., Phys, Rev, Lett., 50(1983), 1191[11] J. D. Kalen et al., Phys. Rev., C39(1989), 340.H. J. Hausman et al., Phys, Rev., C37(1988);503[12] S. L. Blatt. AIP Conf, Proc. No. 125, edited by S, Raman (AIP;. New York,1984) p. 570[13] S. L. Blatt et al., Phys. Rev., C30(1984), 423.[14] T. W. Rackers et al., Phys. Rev., C37(1988), I759.[15] I. Bergqvist, in Neutron Radiative, Capture, edited by R. E. Chrien (pergamon,New York, 1984) p. 33[16] Y. K. Ho and M. A. Lone, Nucl. Rhys., A406(1983); 18.[17] Y. K. Ho and M. A. Lone, Nucl. Phys., A406(1983), 1.[18] C. M. Vincent and H. T. Fortune, Phys.Rev., C2(1970),782.[19] H. T. Rose and D. M. Brink, Rev. Mod.Phys, 39(1967),306.[20] J. M. Lafferty and S. R. Cotanch, Nucl.Phys., A373(1982), 363.[21] F. Ajzenberg-Selove, Nucl. Phys., A433(1985),1.

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HUO Yu-Kun and YUAN Zhu-Shu. Direct Radiative Capture to Continuum States[J]. Chinese Physics C, 1992, 16(1): 82-89.

HUO Yu-Kun and YUAN Zhu-Shu. Direct Radiative Capture to Continuum States[J]. Chinese Physics C, 1992, 16(1): 82-89. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Direct Radiative Capture to Continuum States

HUO Yu-Kun ^,
YUAN Zhu-Shu

Corresponding author: HUO Yu-Kun,

Nuclear Science Department,Fudan University,Shanghai 200433

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1992-01-05

Abstract: A formula for the calculation of the cross sections,of nuclear transition to continuum states induced by direct radiative capture of intermediate-energy proton is deduced.The transition amplitude includes two terms corresponding to potential-scattering to potential-scattering transitions and potential-scattering to resonance-scatting transitions,respectively.The model is compard with available experimental data of the ¹¹B(p,γ₁₉)¹²C reaction,and the results show that the direct capture mechanism is capable to account for the main features of the measured data within the reasonable parameter scope,and,in the present case,the contributions from two terms are of the same order of magnitude.The physical significance of the results is also discussed.