Evidence for enhanced neutron-proton correlations from the level structure of the N = Z+1 nucleus Tc-87(43)44

Liu, X.; Cederwall, B.; Qi, C.; Wyss, R.; Aktas, O.; Ertoprak, A.; Zhang, W.; Clement, E.; de France, G.; Ralet, D.; Gadea, A.; Goasduff, A.; Jaworski, G.; Kuti, I; Nyako, B.; Nyberg, J.; Palacz, M.; Wadsworth, R.; Valiente-Dobon, J.; Al-Azri, H.; Nyberg, A.; Back, T.; de Angelis, G.; Doncel, M.; Dudouet, J.; Gottardo, A.; Jurado, M.; Ljungvall, J.; Mengoni, D.; Napoli, D.; Petrache, C.; Sohler, D.; Timar, J.; Barrientos, D.; Bednarczyk, P.; Benzoni, G.; Birkenbach, B.; Boston, A.; Boston, H.; Burrows, I; Charles, L.; Ciemala, M.; Crespi, F.; Cullen, D.; Desesquelles, P.; Domingo-Pardo, C.; Eberth, J.; Erduran, N.; Erturk, Murat; Gonzalez, V; Goupil, J.; Hess, H.; Huyuk, T.; Jungclaus, A.; Korten, W.; Lemasson, A.; Leoni, S.; Maj, A.; Menegazzo, R.; Million, B.; Perez-Vidal, R.; Podolyak, Zs; Pullia, A.; Recchia, F.; Reiter, P.; Saillant, F.; Salsac, M.; Sanchis, E.; Simpson, J.; Stezowski, O.; Theisen, C.; Zielinska, M.

doi:10.1103/physrevc.104.l021302

Evidence for enhanced neutron-proton correlations from the level structure of the N = Z+1 nucleus Tc-87(43)44

Atıf İçin Kopyala

Liu X., Cederwall B., Qi C., Wyss R. A., Aktas O., Ertoprak A., ...Daha Fazla

PHYSICAL REVIEW C, cilt.104, sa.2, 2021 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 104 Sayı: 2
Basım Tarihi: 2021
Doi Numarası: 10.1103/physrevc.104.l021302
Dergi Adı: PHYSICAL REVIEW C
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
İstanbul Üniversitesi Adresli: Evet

Özet

The low-lying excited states in the neutron-deficient N = Z + 1 nucleus (87)(43)Tcc(44) have been studied via the fusion-evaporation reaction Fe-54(Ar-36, 2n1p)Tc-87 at the Grand Accelerateur 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 Tc-87 from the (9/2(g.s.)(+)) state to the (33/2(1)(+)) state was established based on six mutually coincident gamma-ray transitions. The constructed level structure exhibits a rotational behavior with a sharp backbending at (h) over bar omega approximate to 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.