Observation of the $^7$H excited state
Phys. Rev. Lett. 124, 022502 (2020) The $^7$H system was populated in the $^2$H($^8$He,$^3$He)$^7$H reaction with a 26 AMeV $^8$He beam. The $^{7}$H missing mass energy spectrum, the $^{3}$H energy and angular distributions in the $^7$H decay frame were reconstructed. The $^7$H missing mass spectrum...
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
18.06.2019
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Subjects | |
Online Access | Get full text |
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Summary: | Phys. Rev. Lett. 124, 022502 (2020) The $^7$H system was populated in the $^2$H($^8$He,$^3$He)$^7$H reaction with
a 26 AMeV $^8$He beam. The $^{7}$H missing mass energy spectrum, the $^{3}$H
energy and angular distributions in the $^7$H decay frame were reconstructed.
The $^7$H missing mass spectrum shows a peak which can be interpreted either as
unresolved $5/2^+$ and $3/2^+$ doublet or one of these states at 6.5(5) MeV.
The data also provide indications on the $1/2^+$ ground state of $^7$H located
at 2.0(5) MeV with quite a low population cross section of $\sim 10$ $\mu$b/sr
within angular range $\theta_{\text{cm}} \simeq 6^{\circ} - 30^{\circ}$. |
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DOI: | 10.48550/arxiv.1906.07818 |