The pygmy dipole states were populated in <sup>208</sup>Pb and <sup>124</sup>Sn by the inelastic scattering of a <sup>17</sup>O beam at the energy of 20 MeV/u, and their subsequent gamma decay was measured with the AGATA demonstrator array. Differential cross sections as a function of the angle were measured. The results are compared with (γ, γ') data. For the dipole transitions, a form factor obtained by folding a microscopically calculated transition density was used. This has allowed us to extract the isoscalar component of the 1<sup>-</sup> excited states.
Isospin character of low-lying pygmy dipole states probed via inelastic scattering of <sup>17</sup>O / F.C.L. Crespi, A. Bracco, L. Pellegri. - In: ACTA PHYSICA POLONICA B. - ISSN 0587-4254. - 46:3(2015 Mar), pp. 501-507. ((Intervento presentato al 49. convegno Zakopane Conference on Nuclear Physics : Extremes of the Nuclear Landscape : 31 August - 7 September tenutosi a Zakopane (Poland) nel 2014 [10.5506/APhysPolB.46.501].
Isospin character of low-lying pygmy dipole states probed via inelastic scattering of 17O
F.C.L. CrespiPrimo
;A. BraccoSecondo
;L. PellegriUltimo
2015
Abstract
The pygmy dipole states were populated in 208Pb and 124Sn by the inelastic scattering of a 17O beam at the energy of 20 MeV/u, and their subsequent gamma decay was measured with the AGATA demonstrator array. Differential cross sections as a function of the angle were measured. The results are compared with (γ, γ') data. For the dipole transitions, a form factor obtained by folding a microscopically calculated transition density was used. This has allowed us to extract the isoscalar component of the 1- excited states.
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