Quadrupole moments of the first excited states ofRu96,Ru

Abstract

The static quadrupole moments of the first 2+ excited states of "' " ' " 'Ru were measured employing the reorientation effect in Coulomb excitation. For constructive interference via the second 2+ excited states the determined quadrupole moments are ( -0.13+0.09) eb for "Ru, ( -0.20+0.09) eb for 'Ru, ( -0.43+0.07) eb for ' Ru, ( -0.57+0.07) eb for ' 'Ru, and ( -0.70+0.08) eb for ' 'Ru. These Q, + represent, respectively, 29%, 36%, 67%, 78%, and 84% of the rotational value.

Low-energy structure of the even-ARu96−104isotopes viaTaylor1, Gürdal2, Kumbartzki3 et al. 2011Phys. Rev. C

“…This almost constant trend of the g-factor data is not, however, observed in either the energies of the 2 + 1 states [11][12][13][14][15] (Fig. 1(b)), which show a steady decrease with N , or in the B(E2:0 + 1 → 2 + 1 ) values [12,[15][16][17] (Fig. 1(c)), which increase with increasing N .…”

Simultaneous deorientation and lifetime measurement in98Ru using the recoil distance Doppler shift method in inverse Coulomb excitation

“…* radeck@ikp.uni-koeln. de One particular example in which conflicting lifetime measurements [7,8] have prompted debate is 98 Ru, as discussed in [9] and [10]. In [9], a breakdown of vibrational symmetry in 98 Ru was observed due to two phenomena: the expected vibrational structure fails for states above the two-phonon triplet, and the B 4/2 value of B 4/2 < 1 published in [8] is untypical for a non-magic nucleus.…”

“…1 underlining the contradictory possible interpretations. Nuclear structure considerations suggest that the most precise value [8] may not be correct and the conflict with the result from [7] needs to be resolved. The most recent measurement [10] agrees with [7], however, has large statistical errors.…”

“…Nuclear structure considerations suggest that the most precise value [8] may not be correct and the conflict with the result from [7] needs to be resolved. The most recent measurement [10] agrees with [7], however, has large statistical errors. Hence, a structural interpretation of 98 Ru is difficult due to the lack of accurate data for essential values such as the transition strengths among the lowest-lying states.…”

ESPECTROSCOPIA GAMA DO 100Rh

“…Posteriormente foram realizadas medidas envolvendo excitaçã,o coulombiana [14], reações nucle¿res [15, 16,17] de 24 MeV para 14 MeV por uma lâmina de Ciclotron do IPEN, produzindo a reação 56Fe(p,n)56Co. A co¡rente utilizada foi de 1'5 pA e a energia degradada para 13 MeV, produzindo uma fonte com atividade frnal da ordem de 400 kBq Nesta medida o ganho do amplificador foi ajustado para observar energias na faixa de 150 keV a 3500 keV e o CAD ajustado para realizar a conversão em 8192 canais.…”