Level scheme of $^{153}$Sm obtained from $^{152}$Sm($n_{th}$,$\gamma$) reaction using $\gamma-\gamma$ coincidence spectrometer
The level scheme of the compound $^{153}$Sm nucleus formed via the $^{152}$Sm($n_{th}$,$\gamma$) reaction is studied by using the $\gamma-\gamma$ coincidence spectrometer at Dalat Nuclear Research Institute, Vietnam. All the gamma cascades, which correspond to the decays from the compound state to 1...
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28.07.2019
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Abstract | The level scheme of the compound $^{153}$Sm nucleus formed via the
$^{152}$Sm($n_{th}$,$\gamma$) reaction is studied by using the $\gamma-\gamma$
coincidence spectrometer at Dalat Nuclear Research Institute, Vietnam. All the
gamma cascades, which correspond to the decays from the compound state to 12
final levels of 0 ($\frac{3}{2}^+$), 7.535 ($\frac{5}{2}^+$), 35.844
($\frac{3}{2}^-$), 90.875 ($\frac{5}{2}^-$), 126.412 ($\frac{1}{2}^-$), 127.298
($\frac{3}{2}^-$), 182.902 ($\frac{5}{2}^-$), 321.113 ($\frac{3}{2}^+$),
404.129 ($\frac{1}{2}^-$), 405.470 ($\frac{3}{2}^-$), 414.924
($\frac{1}{2}^+$), and 481.088 ($\frac{3}{2}^+$) keV, have been measured. A
total number of 386 cascades corresponding to 576 gamma transitions has been
detected. Among these cascades, 103 primary gamma transitions together with
their corresponding intermediate levels and 299 secondary transitions have been
determined. In addition, 29 primary gamma transitions, 42 intermediate levels,
and 8 secondary transitions have been found to be the same as those extracted
from the ENSDF data. The remain 74 primary gamma transitions, 61 intermediate
levels, and 291 secondary transitions are therefore considered as the new data.
In particular, based on an assumption that most of the transitions are dipole,
we have tentatively assigned the unique spin value of $\frac{3}{2}\hbar$ for 53
observed intermediate levels corresponding to the cascades from the compound
state to the final ones of 7.535 ($\frac{5}{2}^+$), 90.875 ($\frac{5}{2}^-$),
and 182.902 ($\frac{5}{2}^-$) keV, whereas the remain levels are assigned with
the spin values in the range of $[\frac{1}{2},\frac{3}{2}]\hbar$... |
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AbstractList | The level scheme of the compound $^{153}$Sm nucleus formed via the
$^{152}$Sm($n_{th}$,$\gamma$) reaction is studied by using the $\gamma-\gamma$
coincidence spectrometer at Dalat Nuclear Research Institute, Vietnam. All the
gamma cascades, which correspond to the decays from the compound state to 12
final levels of 0 ($\frac{3}{2}^+$), 7.535 ($\frac{5}{2}^+$), 35.844
($\frac{3}{2}^-$), 90.875 ($\frac{5}{2}^-$), 126.412 ($\frac{1}{2}^-$), 127.298
($\frac{3}{2}^-$), 182.902 ($\frac{5}{2}^-$), 321.113 ($\frac{3}{2}^+$),
404.129 ($\frac{1}{2}^-$), 405.470 ($\frac{3}{2}^-$), 414.924
($\frac{1}{2}^+$), and 481.088 ($\frac{3}{2}^+$) keV, have been measured. A
total number of 386 cascades corresponding to 576 gamma transitions has been
detected. Among these cascades, 103 primary gamma transitions together with
their corresponding intermediate levels and 299 secondary transitions have been
determined. In addition, 29 primary gamma transitions, 42 intermediate levels,
and 8 secondary transitions have been found to be the same as those extracted
from the ENSDF data. The remain 74 primary gamma transitions, 61 intermediate
levels, and 291 secondary transitions are therefore considered as the new data.
In particular, based on an assumption that most of the transitions are dipole,
we have tentatively assigned the unique spin value of $\frac{3}{2}\hbar$ for 53
observed intermediate levels corresponding to the cascades from the compound
state to the final ones of 7.535 ($\frac{5}{2}^+$), 90.875 ($\frac{5}{2}^-$),
and 182.902 ($\frac{5}{2}^-$) keV, whereas the remain levels are assigned with
the spin values in the range of $[\frac{1}{2},\frac{3}{2}]\hbar$... |
Author | Hung, Nguyen Quang Hai, Nguyen Xuan Khang, Pham Dinh Thang, Ho Huu Mitsyna, L. V Sukhovoj, A. M Khiem, Le Hong Anh, Nguyen Ngoc |
Author_xml | – sequence: 1 givenname: Nguyen Ngoc surname: Anh fullname: Anh, Nguyen Ngoc – sequence: 2 givenname: Nguyen Quang surname: Hung fullname: Hung, Nguyen Quang – sequence: 3 givenname: Nguyen Xuan surname: Hai fullname: Hai, Nguyen Xuan – sequence: 4 givenname: Pham Dinh surname: Khang fullname: Khang, Pham Dinh – sequence: 5 givenname: A. M surname: Sukhovoj fullname: Sukhovoj, A. M – sequence: 6 givenname: L. V surname: Mitsyna fullname: Mitsyna, L. V – sequence: 7 givenname: Ho Huu surname: Thang fullname: Thang, Ho Huu – sequence: 8 givenname: Le Hong surname: Khiem fullname: Khiem, Le Hong |
BackLink | https://doi.org/10.48550/arXiv.1907.12068$$DView paper in arXiv |
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Snippet | The level scheme of the compound $^{153}$Sm nucleus formed via the
$^{152}$Sm($n_{th}$,$\gamma$) reaction is studied by using the $\gamma-\gamma$
coincidence... |
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SubjectTerms | Physics - Nuclear Experiment Physics - Nuclear Theory |
Title | Level scheme of $^{153}$Sm obtained from $^{152}$Sm($n_{th}$,$\gamma$) reaction using $\gamma-\gamma$ coincidence spectrometer |
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