Intruder states in odd-mass Ag isotopes

Oblate deformation in neutron-rich Ag118,119

“…Previously, low spin states of several Ag isotopes were reported in the β-decay work of Pd isotopes [1]. The 1/2 + [431] proton intruder orbital was reported to be the origin of the low spin states [1].…”

“…Previously, low spin states of several Ag isotopes were reported in the β-decay work of Pd isotopes [1]. The 1/2 + [431] proton intruder orbital was reported to be the origin of the low spin states [1]. The high spin states of Ag nuclei in this region are usually associated with the πg 9/2 and νh 11/2 orbitals [2][3][4][5].…”

Excitation energy and deformation of the1/2+[431] intruder band inTc107Simpson1, Genevey2, Pinston3 et al. 2007Phys. Rev. C191190View full textAdd to dashboardCite

“…This 1/2 + intruder band is present across a broad region extending from indium to rhodium isotopes and the band members can be traced from 107 In to 121 In [1][2][3], from 105 Ag to 115 Ag [2,[4][5][6] and from 103 Rh to 113 Rh [5,[7][8][9]. This intruder band coexists with normal states which are rather spherical or slightly deformed in indium and silver isotopes, or more deformed levels in rhodium nuclei.…”

“…expected, by analogy with 105 Tc. It is worth noting that the quadrupole deformation increases almost linearly from Ag to Tc : 2 = 0.23 for 115 Ag [4], 2 = 0.29 for 109 Rh [5] and 2 ≈ 0.35 for 105,107 Tc. These three nuclei are close to the minimum excitation energy in each isotopic chain.…”

Structure of the neutron mid-shell nuclei Ag64,66111,113

“…[10,11] and Interacting Boson-Fermion Model calculations in Ref. [12,13]. It was pointed out [7] that, in addition to magnetic moments and electromagnetic transition strengths, a reasonable explanation of the j − 1 anomaly can be achieved by using enhanced quadrupole residual interaction.…”