The pygmy quadrupole resonance and neutron-skin modes in Sn-124
The pygmy quadrupole resonance and neutron-skin modes in Sn-124
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Sn-124 中的侏儒四极共振和中子趋肤模式
DOI:
10.1016/j.physletb.2015.11.004
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发表时间:
2016
影响因子:
4.4
通讯作者:
A. Zilges
中科院分区:
文献类型:
--
作者:
M. Spieker;N. Tsoneva;V. Derya;J. Endres;D. Savran;M.N. Harakeh;S. Harissopulos;R.-D. Herzberg;A. Lagoyannis;H. Lenske;N. Pietralla;L. Popescu;M. Scheck;F. Schlüter;K. Sonnabend;V.I. Stoica;H.J. Wörtche;A. Zilges
We present an extensive experimental study of the recently predicted pygmy quadrupole resonance (PQR) in Sn isotopes, where complementary probes were used. In this study,(α, α′ γ) and (γ, γ′) experiments were performed on 124 Sn. In both reactions, J π= 2+ states below an excitation energy of 5 MeV were populated. The E2 strength integrated over the full transition densities could be extracted from the (γ, γ′) experiment, while the (α, α′ γ) experiment at the chosen kinematics strongly favors the excitation of surface modes because of the strong α-particle absorption in the nuclear interior. The excitation of such modes is in accordance with the quadrupole-type oscillation of the neutron skin predicted by a microscopic approach based on self-consistent density functional theory and the quasiparticle-phonon model (QPM). The newly determined γ-decay branching ratios hint at a non-statistical character of the E2 strength, as it has also been recently pointed out for the case of the pygmy dipole resonance (PDR). This allows us to distinguish between PQR-type and multiphonon excitations and, consequently, supports the recent first experimental indications of a PQR in 124 Sn.
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DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
D. Savran;M. Elvers;J. Endres;M. Fritzsche;B. Loher;N. Pietralla;V. Ponomarev;C. Romig;L. Schnorrenberger;K. Sonnabend;A. Zilges
通讯作者:
A. Zilges
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
J. Enders;O. Karg;P. von Neumann;V. Ponomarev
通讯作者:
V. Ponomarev
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
E. Lanza;A. Vitturi;M. Andrés;F. Catara;D. Gambacurta
通讯作者:
D. Gambacurta
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
L. Pellegri;A. Bracco;F. Crespi;S. Leoni;F. Camera;E. Lanza;M. Kmiecik;A. Maj;R. Avigo;G. Benzoni;N. Blasi;C. Boiano;S. Bottoni;S. Brambilla;S. Ceruti;A. Giaz;B. Million;A. Morales;R. Nicolini;V. Vandone;O. Wieland;D. Bazzacco;P. Bednarczyk;M. Bellato;B. Birkenbach;D. Bortolato;B. Cederwall;L. Charles;M. Ciemala;G. Angelis;P. Désesquelles;J. Eberth;E. Farnea;A. Gadea;R. Gernhäuser;A. Görgen;A. Gottardo;J. Grebosz;H. Hess;R. Isocrate;J. Jolie;D. Judson;A. Jungclaus;N. Karkour;M. Krzysiek;E. Litvinova;S. Lunardi;K. Mazurek;D. Mengoni;C. Michelagnoli;R. Menegazzo;P. Molini;D. Napoli;A. Pullia;B. Quintana;F. Recchia;P. Reiter;M. Salsac;B. Siebeck;S. Siem;J. Simpson;P. Söderström;O. Stézowski;C. Theisen;C. Ur;J. Dobon;M. Ziȩbliński
通讯作者:
M. Ziȩbliński
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
E. Yüksel;E. Khan;K. Bozkurt
通讯作者:
K. Bozkurt