Study of the 7Be(d,3He)6Li* reaction at 5 MeV/u

Sk M. Ali; D. Gupta; K. Kundalia; S. Maity; Swapan K. Saha; O Tengblad; J. D. Ovejas; A. Perea; I. Martel; J. Cederkall; Jason Park; A.M. Moro

doi:10.1016/j.physletb.2024.138673

Study of the ⁷Be(d,³He)⁶Li* reaction at 5 MeV/u

Sk M. Ali, D. Gupta, K. Kundalia, S. Maity, Swapan K. Saha, O Tengblad, J. D. Ovejas, A. Perea, I. Martel, J. Cederkall, Jason Park, A.M. Moro

Particle and nuclear physics

Research output: Contribution to journal › Article › peer-review

Abstract

The measurement of the 7Be(d,3He)6Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of 6Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel frameworks. The effect of the 7Be(d,3He)6Li reaction on both the 6Li and 7Li abundances are investigated at the relevant big-bang nucleosynthesis energies. The excitation function is calculated by TALYS and normalized to the experimental data. The S factor of the (d,3He) channel from the present work is about 50% lower than existing data at nearby energies. At big-bang energies, the S factor is about three orders of magnitude smaller than that of the (d,p) channel. The (d,3He) reaction rate is found to have a less than 0.1% effect on the 6,7Li abundances.

Original language	English
Article number	138673
Number of pages	6
Journal	Physics Letters B
Volume	853
DOIs	https://doi.org/10.1016/j.physletb.2024.138673
Publication status	Published - 2024 Jun

Subject classification (UKÄ)

Subatomic Physics

Free keywords

Big-bang nucleosynthesis
Primordial lithium abundance
Lithium anomalies
Reaction rates

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10.1016/j.physletb.2024.138673Licence: CC BY

Cite this

@article{b0be7200f7124f3b96873f16d4f7a142,

title = "Study of the 7Be(d,3He)6Li* reaction at 5 MeV/u",

abstract = "The measurement of the 7Be(d,3He)6Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of 6Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel frameworks. The effect of the 7Be(d,3He)6Li reaction on both the 6Li and 7Li abundances are investigated at the relevant big-bang nucleosynthesis energies. The excitation function is calculated by TALYS and normalized to the experimental data. The S factor of the (d,3He) channel from the present work is about 50% lower than existing data at nearby energies. At big-bang energies, the S factor is about three orders of magnitude smaller than that of the (d,p) channel. The (d,3He) reaction rate is found to have a less than 0.1% effect on the 6,7Li abundances.",

keywords = "Big-bang nucleosynthesis, Primordial lithium abundance, Lithium anomalies, Reaction rates",

author = "Ali, {Sk M.} and D. Gupta and K. Kundalia and S. Maity and Saha, {Swapan K.} and O Tengblad and Ovejas, {J. D.} and A. Perea and I. Martel and J. Cederkall and Jason Park and A.M. Moro",

year = "2024",

month = jun,

doi = "10.1016/j.physletb.2024.138673",

language = "English",

volume = "853",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Study of the 7Be(d,3He)6Li* reaction at 5 MeV/u

AU - Ali, Sk M.

AU - Gupta, D.

AU - Kundalia, K.

AU - Maity, S.

AU - Saha, Swapan K.

AU - Tengblad, O

AU - Ovejas, J. D.

AU - Perea, A.

AU - Martel, I.

AU - Cederkall, J.

AU - Park, Jason

AU - Moro, A.M.

PY - 2024/6

Y1 - 2024/6

N2 - The measurement of the 7Be(d,3He)6Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of 6Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel frameworks. The effect of the 7Be(d,3He)6Li reaction on both the 6Li and 7Li abundances are investigated at the relevant big-bang nucleosynthesis energies. The excitation function is calculated by TALYS and normalized to the experimental data. The S factor of the (d,3He) channel from the present work is about 50% lower than existing data at nearby energies. At big-bang energies, the S factor is about three orders of magnitude smaller than that of the (d,p) channel. The (d,3He) reaction rate is found to have a less than 0.1% effect on the 6,7Li abundances.

AB - The measurement of the 7Be(d,3He)6Li* transfer cross section at 5 MeV/u is carried out. The population of the 2.186 MeV excited state of 6Li in this reaction channel is observed for the first time. The experimental angular distributions have been analyzed in the finite range DWBA and coupled-channel frameworks. The effect of the 7Be(d,3He)6Li reaction on both the 6Li and 7Li abundances are investigated at the relevant big-bang nucleosynthesis energies. The excitation function is calculated by TALYS and normalized to the experimental data. The S factor of the (d,3He) channel from the present work is about 50% lower than existing data at nearby energies. At big-bang energies, the S factor is about three orders of magnitude smaller than that of the (d,p) channel. The (d,3He) reaction rate is found to have a less than 0.1% effect on the 6,7Li abundances.

KW - Big-bang nucleosynthesis

KW - Primordial lithium abundance

KW - Lithium anomalies

KW - Reaction rates

U2 - 10.1016/j.physletb.2024.138673

DO - 10.1016/j.physletb.2024.138673

M3 - Article

SN - 0370-2693

VL - 853

JO - Physics Letters B

JF - Physics Letters B

M1 - 138673

ER -