Elastic Coulomb breakup of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Na</mml:mi><mml:mprescripts /><mml:none /><mml:mn>34</mml:mn></mml:mmultiscripts></mml:math>

Singh, G. S.; Shubhchintak,; Chatterjee, Rajdeep Mohan

doi:10.1103/physrevc.94.024606

Cited by 19 publications

(92 citation statements)

References 70 publications

(167 reference statements)

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“…1 ), we write the relative energy spectrum for the breakup of this two-body composite system ( 34 Na) as [29]: The three-body Jacobi coordinate system. The r 's are the corresponding position vectors [34].…”

Section: Formalismmentioning

confidence: 99%

“…To explore the prospective role of 34 Na in the r -process and in the elemental abundance near the drip line, we study its Coulomb dissociation (CD) on a heavy target and use the observables so obtained to calculate the rate of the 33 Na(n,γ) 34 Na capture reaction at stellar temperatures. The method we use for CD studies is the FRDWBA which has been advanced to include the effects of deformation on a nucleus [23].…”

Section: Formalismmentioning

confidence: 99%

“…Calculating the photodisintegration cross-section from FRDWBA for the breakup of 34 Na, we then summon the principle of detailed balance to calculate the capture cross-section for the reverse reaction [29,32] and utilize it to find the relevant reaction rates. Since the one neutron separation energy (S n ) and the quadrupole deformation (β 2 ) values are not fully established for 34 Na [33,34], we also study the variation of these capture cross-sections and rates keeping S n and β 2 as parameters. The behaviour of neutron capture rates for the uncertain ground state spin of 34 Na is also discussed.…”

Section: Introductionmentioning

confidence: 99%

“…probe the 33 Na(n,γ) 34 Na reaction, theoretically. Coulomb dissociation involves breakup of a projectile into a core and (a) valence nucleon(s) due to its dynamics in the electromagnetic field of a stable heavy target.…”

Section: Introductionmentioning

confidence: 99%

“…The behaviour of neutron capture rates for the uncertain ground state spin of 34 Na is also discussed. Eventually, we compare the rate of the 33 Na(n,γ) 34 Na capture reaction with that of 33 Na(α,n) 36 Al reaction as obtained from the Hauser-Feshbach (HF) model using the NON-SMOKER code [35] and conclude that at the physical conditions specified, the probability of a neutron capture is greater than that of an α-capture.…”

Section: Introductionmentioning

confidence: 99%

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Structural effects of Na34 in the Na33(n,γ)Na
Singh¹,
Shubhchintak²,
Chatterjee³
2017
Phys. Rev. C
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Background: The path towards the production of r -process seed nuclei follows a course where the neutron rich light and medium mass nuclei play a crucial role. The neutron capture rates for these exotic nuclei could dominate over their α-capture rates, thereby enhancing their abundances at or near the drip line. Sodium isotopes especially should have a strong neutron capture flow to gain abundance at the drip line. In this context, study of 33 Na(n,γ) 34 Na and 33 Na(α,n) 36 Al reactions becomes indispensable.Purpose: In this paper, we calculate the radiative neutron capture cross-section for the 33 Na(n,γ) 34 Na reaction involving deformation effects. Subsequently, the rate for this reaction is found and compared with that of the α-capture for the 33 Na(α,n) 36 Al reaction to determine the possible path flow for the abundances of sodium isotopes.Method: We use the entirely quantum mechanical theory of finite range distorted wave Born approximation upgraded to incorporate deformation effects, and calculate the Coulomb dissociation of 34 Na as it undergoes elastic breakup on 208 Pb when directed at a beam energy of 100 MeV/u. Using the principle of detailed balance to study the reverse photodisintegration reaction, we find the radiative neutron capture cross-section with variation in one neutron binding energy and quadrupole deformation of 34 Na. The rate of this 33 Na(n,γ) 34 Na reaction is then compared with that of the α-capture by 33 Na deduced from the Hauser-Feshbach theory.Results: The non-resonant one neutron radiative capture cross-section for 33 Na(n,γ) 34 Na is calculated and is found to increase with increasing deformation of 34 Na. An analytic scrutiny of the capture cross-section with neutron separation energy as a parameter is also done at different energy ranges. The calculated reaction rate is compared with the rate of the 33 Na(α,n) 36 Al reaction, and is found to be significantly higher below a temperature of T9 = 2. Conclusion:At the equilibrium temperature of T9 = 0.62, the rate for the neutron capture had a small but non-negligible dependence on the structural parameters of 34 Na. In addition, this neutron capture rate exceeded that of the α-capture reaction by orders of magnitude, indicating that the α-process should not break the (n,γ) r-process path at 33 Na isotope, thus, effectively pushing the abundance of sodium isotopes towards the neutron drip line. * gagandph@iitr.ac.in † shub.shubhchintak@tamuc.edu ‡ rcfphfph@iitr.ac.in 2

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Section: Formalismmentioning

confidence: 99%

Section: Formalismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Structural effects of Na34 in the Na33(n,γ)Na
Singh¹,
Shubhchintak²,
Chatterjee³
2017
Phys. Rev. C
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Radiative Neutron Capture Rate of $$^{11}$$B$$(n,\gamma )^{12}$$B Reaction from the Coulomb Dissociation of $$^{12}$$B

Shubhchintak,

Singh,

Chatterjee

et al. 2024

Few-Body Syst

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We calculate the $$^{11}$$ 11 B$$(n,\gamma )^{12}$$ ( n , γ ) 12 B reaction rate which is an important constituent in nucleosynthesis networks and is contributed by resonant as well as non-resonant capture. For the resonant rate, we use the narrow resonance approximation whereas the non-resonant contribution is calculated with the Coulomb dissociation method for which we use finite-range distorted wave Born approximation theory. We then compare our calculated rate of $$^{11}$$ 11 B$$(n,\gamma )^{12}$$ ( n , γ ) 12 B reaction with those reported earlier and with other charged particle reactions on $$^{11}$$ 11 B.

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Status of nuclear physics behind nucleosynthesis processes: The role of exotic neutron-rich nuclei

Chatterjee

Dan

2020

J Astrophys Astron

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We give a brief overview of the current status of important nuclear physics inputs, like reaction rates, in hydrostatic and explosive nucleosynthesis. Recently, it has been proposed that exotic neutron-rich nuclei play an important role even in the formation of heavy elements via the r-process. The main problems here are identification, abundance estimation of seed nuclei in these processes, and their pathways. We will try to highlight how improved nuclear structure and reaction calculations can affect our present understanding of radiative capture rates of light-mass and medium-mass nuclei, which in turn can drastically influence the abundance of heavier-mass elements.

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Elastic Coulomb breakup ofNa34

Cited by 19 publications

References 70 publications

Structural effects of Na34 in the Na33(n,γ)Na
Singh¹,
Shubhchintak²,
Chatterjee³
2017
Phys. Rev. C
Self Cite
9
0
6
0
View full text Add to dashboard Cite

Structural effects of Na34 in the Na33(n,γ)Na
Singh¹,
Shubhchintak²,
Chatterjee³
2017
Phys. Rev. C
Self Cite
9
0
6
0
View full text Add to dashboard Cite

Radiative Neutron Capture Rate of $$^{11}$$B$$(n,\gamma )^{12}$$B Reaction from the Coulomb Dissociation of $$^{12}$$B

Status of nuclear physics behind nucleosynthesis processes: The role of exotic neutron-rich nuclei

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Elastic Coulomb breakup ofNa34

Cited by 19 publications

References 70 publications

Structural effects of Na34 in the Na33(n,γ)NaSingh1, Shubhchintak2, Chatterjee3 2017Phys. Rev. CSelf Cite9060View full textAdd to dashboardCite

Structural effects of Na34 in the Na33(n,γ)NaSingh1, Shubhchintak2, Chatterjee3 2017Phys. Rev. CSelf Cite9060View full textAdd to dashboardCite

Radiative Neutron Capture Rate of $$^{11}$$B$$(n,\gamma )^{12}$$B Reaction from the Coulomb Dissociation of $$^{12}$$B

Status of nuclear physics behind nucleosynthesis processes: The role of exotic neutron-rich nuclei

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Structural effects of Na34 in the Na33(n,γ)Na
Singh¹,
Shubhchintak²,
Chatterjee³
2017
Phys. Rev. C
Self Cite
9
0
6
0
View full text Add to dashboard Cite

Structural effects of Na34 in the Na33(n,γ)Na
Singh¹,
Shubhchintak²,
Chatterjee³
2017
Phys. Rev. C
Self Cite
9
0
6
0
View full text Add to dashboard Cite