Collective 2(1)(+) excitations in Po-206 and Rn-208,Rn-210

Grahn, T; Pakarinen, J; Jokiniemi, L; Albers, M; Auranen, K; Bauer, C; Bernards, C; Blazhev, A; Butler, PA; Boenig, S; Damyanova, A; De Coster, Tim; De Witte, Hilde; Elseviers, J; Gaffney, LP; Huyse, Mark; Herzan, A; Jakobsson, U; Julin, R; Kesteloot, Nele; Konki, J; Kroell, Th; Lewandowski, L; Moschner, K; Peura, P; Pfeiffer, M; Radeck, D; Rahkila, P; Rapisarda, E; Reiter, P; Reynders, Kobe; Rudiger, M; Salsac, M-D; Sambi, Sara; Scheck, M; Seidlitz, M; Siebeck, B; Steinbach, T; Stolze, S; Suhonen, J; Thoele, P; Thuerauf, M; Warr, N; Van Duppen, Piet; Venhart, M; Vermeulen, MJ; Werner, V; Veselsky, M; Vogt, A; Wrzosek-Lipska, Kasia; Zielinska, M

doi:10.1140/epja/i2016-16340-6

Collective 2(1)(+) excitations in Po-206 and Rn-208,Rn-210

Author:

Grahn, T

Pakarinen, J ; Jokiniemi, L ; Albers, M ; Auranen, K ; Bauer, C ; Bernards, C ; Blazhev, A ; Butler, PA ; Boenig, S ; Damyanova, A ; De Coster, Tim ; De Witte, Hilde ; Elseviers, J ; Gaffney, LP ; Huyse, Mark ; Herzan, A ; Jakobsson, U ; Julin, R ; Kesteloot, Nele ; Konki, J ; Kroell, Th ; Lewandowski, L ; Moschner, K ; Peura, P ; Pfeiffer, M ; Radeck, D ; Rahkila, P ; Rapisarda, E ; Reiter, P ; Reynders, Kobe ; Rudiger, M ; Salsac, M-D ; Sambi, Sara ; Scheck, M ; Seidlitz, M ; Siebeck, B ; Steinbach, T ; Stolze, S ; Suhonen, J ; Thoele, P ; Thuerauf, M ; Warr, N ; Van Duppen, Piet ; Venhart, M ; Vermeulen, MJ ; Werner, V ; Veselsky, M ; Vogt, A ; Wrzosek-Lipska, Kasia ; Zielinska, M

Keywords:

Science & Technology, Physical Sciences, Physics, Nuclear, Physics, Particles & Fields, Physics, EVEN-EVEN NUCLIDES, TRANSITION-PROBABILITY, INTRUDER STATES, SHELL-MODEL, NUCLEI, FACILITY, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, 5106 Nuclear and plasma physics, 5107 Particle and high energy physics, 5110 Synchrotrons and accelerators

Abstract:

In the present study, values have been measured in the 208,210Rn and 206Po nuclei through Coulomb excitation of re-accelerated radioactive beams in inverse kinematics at CERN-ISOLDE. These nuclei have been proposed to lie in, or at the boundary of the region where the seniority scheme should persist. However, contributions from collective excitations are likely to be present when moving away from the N=126 closed shell. Such an effect is confirmed by the observed increased collectivity of the transitions. Experimental results have been interpreted with the aid of theoretical studies carried out within the BCS-based QRPA framework.