Phase-function method for elastic?-? scattering

Laha, U.; Haque, Najmul; Nandi, T.; Sett, G C

doi:10.1007/bf01295460

Cited by 8 publications

(13 citation statements)

References 10 publications

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“…Beyond 19.6 MeV our phase shifts become negative but possess slightly higher values than those of Ref. [49] up to 70 MeV. In the energy range 70-100 MeV they agree quite well with Ref.…”

Section: Resultssupporting

confidence: 89%

“…As expected, the S-wave phase shifts for the α-α system are positive at low energies and become negative at high energies. The S-wave phase shift changes its sign at E Lab = 19.6 MeV which deviates by 3 • from our earlier work based on exact calculation of the Coulomb plus separable potential [49] but coincides with the results of Refs. [12][13]50].…”

Section: Resultssupporting

confidence: 89%

“…In the energy range 70-100 MeV they agree quite well with Ref. [49]. The first order Born approximation to δ 0 changes the sign of the phase shift at about 7 MeV and gradually approaches the values of Ref.…”

Section: Resultssupporting

confidence: 86%

“…The first order Born approximation to δ 0 changes the sign of the phase shift at about 7 MeV and gradually approaches the values of Ref. [49] as energy increases while the second order approximation produces poor fit to standard data. Our D-wave phase shift reaches its peak value of about 124.915 • at E Lab = 4 MeV in contrast to the standard results [13,49−50] at about 8 MeV.…”

Section: Resultsmentioning

confidence: 75%

“…It is obvious from the fact that the parameters for the nuclear part of the interaction, used in this text, for both the systems are identical. Here we have chosen to work with V 0 a = 0.2758 fm −1 for α-α system; [49] V 0 a = 0.2364 fm −1 for α- 3 He system; V 0 a = 0.1182 fm −1 for α- 3 H system and a = 50 au (atomic unit). Exploiting Eq.…”

Section: Resultsmentioning

confidence: 99%

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Parameterization of Nuclear Hulthén Potential for Nucleus-Nucleus Elastic Scattering

Bhoi¹,

Upadhyay²,

Laha³

2018

Commun. Theor. Phys.

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In contrast to Gaussian or Woods-Saxon potential a two-term four parameter nuclear Hulthén type interaction is considered to describe the α-α, α-3 He and α-3 H systems. By exploiting the phase function method, scattering phase shifts are computed up to E Lab = 100 MeV for the α-α system and E Lab = 15 MeV for α-3 He and α-3 H systems. The S-wave phase shift δ0 for the α-α system tends to 2π and δ 3/2 − for the α-3 He system tends to π, in the limit of zero energy. Reasonable agreements in phase shifts with the standard data are obtained with this simple potential model except for the 5/2 − states of α-3 He and α-3 H systems. With an additional energy-dependent correction factor to our potential, a good agreement with experimental data is obtained for 5/2 − states. We have also compared our results with the convenient Born approximations.

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“…Beyond 19.6 MeV our phase shifts become negative but possess slightly higher values than those of Ref. [49] up to 70 MeV. In the energy range 70-100 MeV they agree quite well with Ref.…”

Section: Resultssupporting

confidence: 89%