Strong Polarization of the1p-Shell Core in the LowestO+States of<

Isoscalar monopole and dipole transitions inMg24,Mg26, andSi

“…[7,23,24] for a general view and Refs. [25][26][27][28][29][30][31][33][34][35] ( 24 Mg), [30,[36][37][38][39][40][41][42]] ( 26 Mg), [31-33, 35, 40, 42-47] ( 28 Si) for particular studies). We now provide comparative experimental and theoretical analyses of these nuclei.…”

Monopole excitations in 4He, 12C and 24Mg in a collective model description

“…Shape transitions (without transfer of angular m omentum) are directly related to compressional features of the nucleus. Apart from recent evidence for the compressional mode in heavy nuclei [1 ] this type of excitation has been studied experimentally only for light nuclear systems in electron [2,3] and hadron scattering [4][5][6]. The microscopic interpretation of these transitions is difficult because it depends sensitively on the amount of n-particle-n-hole configuration mixing in ground and excited 0 + state (see ref.…”

“…The microscopic interpretation of these transitions is difficult because it depends sensitively on the amount of n-particle-n-hole configuration mixing in ground and excited 0 + state (see ref. [4,5]).…”

“…This force has successfully been used in the microscopic analysis of 3He and c~ scattering (see ref. [4,5]). The optical potentials of 3He and c~ scattering (see ref.…”

“…The optical potentials of 3He and c~ scattering (see ref. [4,5]). First, transition densities are discussed for 24Mg, they are shown in fig.…”