Nuclear Data Sheets for A=38

Lifetime measurements of states of S35 , S36 , Grocutt1, Chapman2, Haas3 et al. 2022Phys. Rev. C4000View full textAdd to dashboardCite

“…An evaluation of the literature for A = 38 nuclides has recently been published by Chen [68]. In relation to the yrast states with J π = 2 + , 4 + , and (6 + ) observed in the present work, there is agreement with earlier published studies of 38 S [8,32].…”

“…However, the position and shape of the 833-keV photopeak in the work of Lunderberg et al is consistent with the emission of a 849-keV γ ray from a state that has a mean lifetime τ between 100 and 200 ps. Nevertheless, the evaluation of Chen [68] places the yrast (6 + ) state at an excitation energy of 3658( 6) keV, based on the 833-keV photopeak; the available evidence strongly suggests that this is incorrect. A state at excitation energy 3690 (17) keV was observed in the 36 S(t, p) 38 S two-neutron transfer reaction [70] with an orbital angular-momentum transfer of L = 5 or 6 (J π = 5 − or 6 + ), and this is also consistent with the proposed 6 + spin and parity assignment.…”

“…A state at excitation energy 3690 (17) keV was observed in the 36 S(t, p) 38 S two-neutron transfer reaction [70] with an orbital angular-momentum transfer of L = 5 or 6 (J π = 5 − or 6 + ), and this is also consistent with the proposed 6 + spin and parity assignment. In relation to the non-yrast states observed in the earlier PRISMA-CLARA experiment [10], the 3516-and 4436-keV states are included in the evaluation of Chen [68] with J π values of (1, 2 + ) and (4 + ) respectively; the 3616-and 3999-keV states have not, on the other hand, been reported in the literature. The γ -ray transitions of energy 383 and 438 keV are included in the evaluation of Chen [68], but unplaced.…”

“…In relation to the non-yrast states observed in the earlier PRISMA-CLARA experiment [10], the 3516-and 4436-keV states are included in the evaluation of Chen [68] with J π values of (1, 2 + ) and (4 + ) respectively; the 3616-and 3999-keV states have not, on the other hand, been reported in the literature. The γ -ray transitions of energy 383 and 438 keV are included in the evaluation of Chen [68], but unplaced. [73] using the Doppler-shift attenuation method; states of 38 S were populated using the 36 S(t, p) reaction.…”

Microsecond Isomer at the N=20 Island of Shape Inversion Observed at FRIB

“…While doubly magic 40 20 Ca 20 has a spherical 0 + 1 ground state, excited 0 + states with normal and super deformation exist at 3.4 and 5.2 MeV, respectively [2,4,5]. Moving to semi-magic 38 18 Ar 20 , 36 16 S 20 , and 34 14 Si 20 , the excited 0 + 2 states progress from 3.4 to 2.7 MeV; the first-excited 2 + 1 states vary from 2.2 to 3.3 MeV [6][7][8], consistent with spherical ground states.…”