Analyses of electron and proton scattering to low-excitation isoscalar states in 20Ne, 24Mg and 28Si

Inelastic Scattering from 20Ne

“…The results obtained using the LF81, LF85 and Ham90 interactions are displayed in the top, middle and bottom panels respectively. In view of the reasonable fits to data obtained using the full PHF model of structure for the electron scattering form factors, as well as in analyses of low energy (24·5 MeV) inelastic scattering data (Amos and Bauhoff 1984), our calculations for 800 MeV scattering give surprisingly poor results when compared with the data.…”

“…The low excitation spectrum of 20Ne and transition rates between the states therein have been calculated using the conventional s-d shell model, as well as projected Hartree-Fock (PHF) models of varying dimension (Ford et al 1971;Nesci and Amos 1977 (Amos and Bauhoff 1984;Amos and Steward 1990) to consider electron and proton scattering; the latter at low energies.…”

Probing negative-parity states of Mg24 probed with proton and α inelastic scattering

“…The band structure of 24 Mg has been studied via electromagnetic transitions [1][2][3], and intensively investigated through inelastic scattering of various probes, including electrons [4][5][6][7][8][9][10], pions [11], nucleons [12][13][14][15][16][17][18][19][20][21][22][23], 3 He [24,25], and α [25][26][27][28][29]. For inelastic hadron scattering off 24 Mg, detailed reaction analyses have been performed using the distorted-wave Born approximation (DWBA) and coupled-channel (CC) calculations.…”

Microscopic coupled-channel calculation of proton and alpha inelastic scattering to the $4^+_1$ and $4^+_2$ states of $^{24}$Mg

“…The band structure and deformations of 24 Mg have been investigated by various experimental probes, including electromagnetic transitions [1][2][3] and the inelastic scatterings of electrons [4][5][6][7][8][9][10], pions [11], nucleons [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27], 3 He [28,29], and α particles [29][30][31][32][33]. In the positiveparity spectra, the {0 + 1 , 2 + 1 , 4 + 1 } and {2 + 2 , 3 + 1 , 4 + 2 } states have been assigned to the K π = 0 + ground-and K π = 2 + side-bands, respectively.…”

“…However, for the 4 + 1 (K π = 0 + ) state, such reaction calculations with phenomenological collective models have failed to describe the angular distribution of the (p, p ) cross sections. Further, microscopic approaches have been applied to calculate the inelastic scattering of protons [14,27] and the inelastic charge form factors [9,36]; however, no microscopic calculation has succeeded in reproducing the property of the 0 + 1 → 4 + 1 transition. In inelastic scattering, the 4 + 1 (4.12 MeV) state is weakly produced compared to the 2 + 2 (4.24 MeV) state at close energy.…”