Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$

The low-lying excited states in the neutron-deficient $N = Z + 1$  nucleus  $^{87}_{43}$Tc$_{44}$  have been studied via the fusion-evaporation reaction $^{54}$Fe $(^{36}Ar, 2n1p)$ $^{87}$Tc at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in con...

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Detalles Bibliográficos
Autores principales: Liu, X., Cederwall, B., Qi, C., Wyss, R.A., Aktas, Ö., Ertoprak, A., Zhang, W., Clément, E., de France, G., Ralet, D., Gadea, A., Goasduff, A., Jaworski, G., Kuti, I., Nyakó, B.M., Nyberg, J., Palacz, M., Wadsworth, R., Valiente-Dobón, J.J., Al-Azri, H., Ataç Nyberg, A., Bäck, T., de Angelis, G., Doncel, M., Dudouet, J., Gottardo, A., Jurado, M., Ljungvall, J., Mengoni, D., Napoli, D.R., Petrache, C.M., Sohler, D., Timár, J., Barrientos, D., Bednarczyk, P., Benzoni, G., Birkenbach, B., Boston, A.J., Boston, H.C., Burrows, I., Charles, L., Ciemala, M., Crespi, F.C.L., Cullen, D.M., Désesquelles, P., Domingo-Pardo, C., Eberth, J., Erduran, N., Ertürk, S., González, V., Goupil, J., Hess, H., Huyuk, T., Jungclaus, A., Korten, W., Lemasson, A., Leoni, S., Maj, A., Menegazzo, R., Million, B., Perez-Vidal, R.M., Podolyàk, Zs., Pullia, A., Recchia, F., Reiter, P., Saillant, F., Salsac, M.D., Sanchis, E., Simpson, J., Stezowski, O., Theisen, C., Zielińska, M.
Lenguaje:eng
Publicado: 2021
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.104.L021302
http://cds.cern.ch/record/2780488
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author Liu, X.
Cederwall, B.
Qi, C.
Wyss, R.A.
Aktas, Ö.
Ertoprak, A.
Zhang, W.
Clément, E.
de France, G.
Ralet, D.
Gadea, A.
Goasduff, A.
Jaworski, G.
Kuti, I.
Nyakó, B.M.
Nyberg, J.
Palacz, M.
Wadsworth, R.
Valiente-Dobón, J.J.
Al-Azri, H.
Ataç Nyberg, A.
Bäck, T.
de Angelis, G.
Doncel, M.
Dudouet, J.
Gottardo, A.
Jurado, M.
Ljungvall, J.
Mengoni, D.
Napoli, D.R.
Petrache, C.M.
Sohler, D.
Timár, J.
Barrientos, D.
Bednarczyk, P.
Benzoni, G.
Birkenbach, B.
Boston, A.J.
Boston, H.C.
Burrows, I.
Charles, L.
Ciemala, M.
Crespi, F.C.L.
Cullen, D.M.
Désesquelles, P.
Domingo-Pardo, C.
Eberth, J.
Erduran, N.
Ertürk, S.
González, V.
Goupil, J.
Hess, H.
Huyuk, T.
Jungclaus, A.
Korten, W.
Lemasson, A.
Leoni, S.
Maj, A.
Menegazzo, R.
Million, B.
Perez-Vidal, R.M.
Podolyàk, Zs.
Pullia, A.
Recchia, F.
Reiter, P.
Saillant, F.
Salsac, M.D.
Sanchis, E.
Simpson, J.
Stezowski, O.
Theisen, C.
Zielińska, M.
author_facet Liu, X.
Cederwall, B.
Qi, C.
Wyss, R.A.
Aktas, Ö.
Ertoprak, A.
Zhang, W.
Clément, E.
de France, G.
Ralet, D.
Gadea, A.
Goasduff, A.
Jaworski, G.
Kuti, I.
Nyakó, B.M.
Nyberg, J.
Palacz, M.
Wadsworth, R.
Valiente-Dobón, J.J.
Al-Azri, H.
Ataç Nyberg, A.
Bäck, T.
de Angelis, G.
Doncel, M.
Dudouet, J.
Gottardo, A.
Jurado, M.
Ljungvall, J.
Mengoni, D.
Napoli, D.R.
Petrache, C.M.
Sohler, D.
Timár, J.
Barrientos, D.
Bednarczyk, P.
Benzoni, G.
Birkenbach, B.
Boston, A.J.
Boston, H.C.
Burrows, I.
Charles, L.
Ciemala, M.
Crespi, F.C.L.
Cullen, D.M.
Désesquelles, P.
Domingo-Pardo, C.
Eberth, J.
Erduran, N.
Ertürk, S.
González, V.
Goupil, J.
Hess, H.
Huyuk, T.
Jungclaus, A.
Korten, W.
Lemasson, A.
Leoni, S.
Maj, A.
Menegazzo, R.
Million, B.
Perez-Vidal, R.M.
Podolyàk, Zs.
Pullia, A.
Recchia, F.
Reiter, P.
Saillant, F.
Salsac, M.D.
Sanchis, E.
Simpson, J.
Stezowski, O.
Theisen, C.
Zielińska, M.
author_sort Liu, X.
collection CERN
description The low-lying excited states in the neutron-deficient $N = Z + 1$  nucleus  $^{87}_{43}$Tc$_{44}$  have been studied via the fusion-evaporation reaction $^{54}$Fe $(^{36}Ar, 2n1p)$ $^{87}$Tc at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt  γ  rays, neutrons, and charged particles emitted in the reaction. A level scheme of $^{87}$Tc from the $(9/2^+_{g.s})$ state to the $( 33 / 2^+_1$) state was established based on six mutually coincident  γ -ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $ℏω ≈ 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line.
id cern-2780488
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27804882023-01-31T03:58:16Zdoi:10.1103/PhysRevC.104.L021302http://cds.cern.ch/record/2780488engLiu, X.Cederwall, B.Qi, C.Wyss, R.A.Aktas, Ö.Ertoprak, A.Zhang, W.Clément, E.de France, G.Ralet, D.Gadea, A.Goasduff, A.Jaworski, G.Kuti, I.Nyakó, B.M.Nyberg, J.Palacz, M.Wadsworth, R.Valiente-Dobón, J.J.Al-Azri, H.Ataç Nyberg, A.Bäck, T.de Angelis, G.Doncel, M.Dudouet, J.Gottardo, A.Jurado, M.Ljungvall, J.Mengoni, D.Napoli, D.R.Petrache, C.M.Sohler, D.Timár, J.Barrientos, D.Bednarczyk, P.Benzoni, G.Birkenbach, B.Boston, A.J.Boston, H.C.Burrows, I.Charles, L.Ciemala, M.Crespi, F.C.L.Cullen, D.M.Désesquelles, P.Domingo-Pardo, C.Eberth, J.Erduran, N.Ertürk, S.González, V.Goupil, J.Hess, H.Huyuk, T.Jungclaus, A.Korten, W.Lemasson, A.Leoni, S.Maj, A.Menegazzo, R.Million, B.Perez-Vidal, R.M.Podolyàk, Zs.Pullia, A.Recchia, F.Reiter, P.Saillant, F.Salsac, M.D.Sanchis, E.Simpson, J.Stezowski, O.Theisen, C.Zielińska, M.Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$Nuclear Physics - ExperimentThe low-lying excited states in the neutron-deficient $N = Z + 1$  nucleus  $^{87}_{43}$Tc$_{44}$  have been studied via the fusion-evaporation reaction $^{54}$Fe $(^{36}Ar, 2n1p)$ $^{87}$Tc at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt  γ  rays, neutrons, and charged particles emitted in the reaction. A level scheme of $^{87}$Tc from the $(9/2^+_{g.s})$ state to the $( 33 / 2^+_1$) state was established based on six mutually coincident  γ -ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $ℏω ≈ 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line.The low-lying excited states in the neutron-deficient $N=Z+1$ nucleus $^{87}_{43}$Tc$^{\ }_{44}$ have been studied via the fusion-evaporation reaction $^{54}$Fe($^{36}$Ar, $2n1p$)$^{87}$Tc at the Grand Accélérateur National d'Ions Lourds (GANIL), France. The AGATA spectrometer was used in conjunction with the auxiliary NEDA, Neutron Wall, and DIAMANT detector arrays to measure coincident prompt $\gamma$-rays, neutrons, and charged particles emitted in the reaction. A level scheme of $^{87}$Tc from the (9/2$^{+}_{g.s.}$) state to the (33/2$^{+}_{1}$) state was established based on 6 mutually coincident $\gamma$-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at $\hbar\omega\approx 0.50$ MeV. A decrease in alignment frequency and increase in alignment sharpness in the odd-mass isotonic chains around $N=44$ is proposed as an effect of the enhanced isoscalar neutron-proton interactions in odd-mass nuclei when approaching the $N=Z$ line.arXiv:2109.06292oai:cds.cern.ch:27804882021-09-13
spellingShingle Nuclear Physics - Experiment
Liu, X.
Cederwall, B.
Qi, C.
Wyss, R.A.
Aktas, Ö.
Ertoprak, A.
Zhang, W.
Clément, E.
de France, G.
Ralet, D.
Gadea, A.
Goasduff, A.
Jaworski, G.
Kuti, I.
Nyakó, B.M.
Nyberg, J.
Palacz, M.
Wadsworth, R.
Valiente-Dobón, J.J.
Al-Azri, H.
Ataç Nyberg, A.
Bäck, T.
de Angelis, G.
Doncel, M.
Dudouet, J.
Gottardo, A.
Jurado, M.
Ljungvall, J.
Mengoni, D.
Napoli, D.R.
Petrache, C.M.
Sohler, D.
Timár, J.
Barrientos, D.
Bednarczyk, P.
Benzoni, G.
Birkenbach, B.
Boston, A.J.
Boston, H.C.
Burrows, I.
Charles, L.
Ciemala, M.
Crespi, F.C.L.
Cullen, D.M.
Désesquelles, P.
Domingo-Pardo, C.
Eberth, J.
Erduran, N.
Ertürk, S.
González, V.
Goupil, J.
Hess, H.
Huyuk, T.
Jungclaus, A.
Korten, W.
Lemasson, A.
Leoni, S.
Maj, A.
Menegazzo, R.
Million, B.
Perez-Vidal, R.M.
Podolyàk, Zs.
Pullia, A.
Recchia, F.
Reiter, P.
Saillant, F.
Salsac, M.D.
Sanchis, E.
Simpson, J.
Stezowski, O.
Theisen, C.
Zielińska, M.
Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
title Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
title_full Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
title_fullStr Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
title_full_unstemmed Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
title_short Evidence for enhanced neutron-proton correlations from the level structure of the $N=Z+1$ nucleus $_{43}^{87}\mathrm{Tc}_{44}$
title_sort evidence for enhanced neutron-proton correlations from the level structure of the $n=z+1$ nucleus $_{43}^{87}\mathrm{tc}_{44}$
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1103/PhysRevC.104.L021302
http://cds.cern.ch/record/2780488
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