Bonding potential between two12C nuclei

Sarangi, Pulak; Ali, S.; Satpathy, L.

doi:10.1007/bf02847195

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…In the present mechanism, the necessity of the hypothesis of a low level -density window at the high excitation energy in the corresponding compound nucleus, is not necessary as the collision process takes place in the dinuclear regime. This mechanism is supported by extensive studies on deep inelastic and fusion phenomena in surface friction model by Gross and Satpathy [21] and also is in accordance with nuclear structure calculations [22,23]. The present study puts on a firm footing the close similarity of physics between the diatomic molecules and NMR at a fundamental level, most conspicuously manifested in the rotation-vibration feature of their respective spectra although they belong to two different areas of physics governed by totally different interactions, namely, electromagnetic and nuclear interactions respectively.…”

Section: Discussionsupporting

confidence: 84%

Resonance states in 16O+16O, 12C+16O, α+16O and α+12C with modified Morse potentials

Sahu

Satpathy²

2008

Pramana - J Phys

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The resonance states in 16 O+ 16 O, 12 C+ 16 O, α+ 16 O and α+ 12 C are described using modified Morse potential proposed earlier whose success has already been demonstrated in the case of 12 C+ 12 C system. The general validity of such a potential with long range, shallow depth and repulsive soft core determined from the resonance data itself is being examined through the present study of the resonances in the above four systems.In each system, the experimental data of a large number of states have been successfully described with a modified Morse potential. The success points out a common mechanism of the origin of these states, and reaffirms authentically the diatomic-like rotational and vibrational picture of the nuclear molecular resonances proposed previously. The close resemblance between the physics of diatomic molecules and nuclear molecular resonances extending to the level of potential which is Morse type in both the cases -although belong to two different areas of physics -is further strengthened through the present study.Keywords. Elastic and quasi-elastic scattering; resonances; low and intermediate energy heavy-ion reactions.

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Section: Discussionsupporting

confidence: 84%

Resonance states in 16O+16O, 12C+16O, α+16O and α+12C with modified Morse potentials

Sahu

Satpathy²

2008

Pramana - J Phys

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“…The two methods ITP and IPS developed by us before [15], and used here in the calcula- identity. This gives a natural explanation for the puzzle to understand how these states which lie at more than 20 MeV of excitation in the corresponding compound system 24 Mg without being washed away in the sea of high level density. This discomfiture was temporarily overcome in the past by proposing the hypothesis [26,27] of the existence of a molecular window with a narrow band of low level density in the compound nucleus.…”

Section: Discussionmentioning

confidence: 98%

“…The long-range of the potential offer the possibility of the two nuclei to remain all along in the dinuclear regime and interact retaining their identity. This gives a natural explanation for the puzzle to understand how these states which lie at more than 20 MeV of excitation in the corresponding compound system24 Mg without being washed away in the sea of high level density. This dis-…”

mentioning

confidence: 99%

“…Its long-range feature of 15 fm is compatible with the well-known 3α linear chain structure[23] of the first 0 + excited state of 12 C, since two such nuclei aligned along the symmetry axis can generate such a potential. In fact microscopic calculations[3,24,25] of 12 C-12 C potential -in their highly deformed 3α linear chain configuration -in α-particle, α-cluster and folding models using Brink-Boeker, Volkov and Ali-Bodmore potentials have amply justified this feature.The very fact that the cross sections of 12 C+ 12 C reaction do not conform exclusively to the picture of two 3α chains colliding in the scattering, one cannot preclude the possibility of the two 12 C nuclei can be resonating within a long-range Morse-like potential in the exit channel. The long-range of the potential offer the possibility of the two nuclei to remain all along in the dinuclear regime and interact retaining their identity.…”

mentioning

confidence: 99%

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Resonance states in the¹²C+¹²C modified Morse potential

Satpathy¹

2005

J. Phys. G: Nucl. Part. Phys.

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The resonances in 12 C+ 12 C system described earlier using long range Morse potential determined from resonance data itself, are reexamined in the light of the recent development of the two new methods for identification of resonances in the scattering theory, namely Imaginary Test Potential and Imaginary Phase-shift methods. The high lying resonances are found to be not genuine as pointed out by Kato and Abe, and as such are discarded. This discomfiture is due to the (i) shallow behavior of the Morse potential at the outer edge and (ii) inappropriate insertion of Coulomb tail used in that work. These two deficiencies are now removed in the present study by finding a modified Morse potential with steep rise in the outer edge, and joining smoothly to it a term approximating the Coulomb tail. Calculation of the resonances for this modified Morse potential using the above two methods of identification of resonances in our study, yields more than 25 states with angular momenta 0 + -12 + in the relevant energy regions. This reaffirms the diatomic-like rotational and vibrational picture of the nuclear molecular resonances in 12 C+ 12 C system proposed earlier, and shows close resemblance with the physics of diatomic molecules, a phenomenon belonging to altogether a different area. It is revealing that the similarity extends right upto the level of potential which is Morse type in both the cases. This study also reveals new features of heavy ion potential.

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