Properties of isoscalar monopole particle-hole-type excitations in<sup>208</sup>Pb

Gorelik, M. L.; Shlomo, S.; Tulupov, B. A.; Urin, M. H.

doi:10.1051/epjconf/201610705008

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…1 (see also Ref. [12]). The negative values of lead to an underestimation of the total ISGMR strength.…”

Section: Pb Parent Nucleus Within the Phdom Unitary Versionmentioning

confidence: 94%

“…[9][10][11]. The signatures of unitarity violations within the PHDOM are the appearance of: (i) nonzero values (markedly larger than uncertainties of numerical calculations) of the spurious strength function, corresponding to the unit external field; (ii) small negative values of the strength function of the isoscalar giant monopole resonance (ISGMR) at the energies much larger than the ISGMR energy [12]. The last effect leads to an underestimation of the total ISGMR strength.…”

Section: Introductionmentioning

confidence: 99%

“…Preliminary results of this investigation are given in Refs. [12,13]. As an adjunct to studies of Refs.…”

Section: Introductionmentioning

confidence: 99%

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On unitarity of the particle–hole dispersive optical model

et al. 2018

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For the recently developed particle-hole dispersive optical model, weak violations of unitarity due to a phenomenological description of the spreading effect are considered. Methods for unitarity restoration are proposed and implemented for the 208 Pb nucleus in the description of the energy-averaged isoscalar monopole double transition density and strength functions in a wide excitation energy interval that includes the isoscalar giant monopole resonance and its overtone. To illustrate abilities of the model, direct neutron decay of the mentioned giant resonance is also considered.

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“…1 (see also Ref. [12]). The negative values of lead to an underestimation of the total ISGMR strength.…”

Section: Pb Parent Nucleus Within the Phdom Unitary Versionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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On unitarity of the particle–hole dispersive optical model

et al. 2018

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Investigation of the energy-averaged double transition density of isoscalar monopole excitations in medium-heavy mass spherical nuclei

et al. 2016

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The particle-hole dispersive optical model, developed recently, is applied to describe properties of high-energy isoscalar monopole excitations in medium-heavy mass spherical nuclei. We consider, in particular, the double transition density averaged over the energy of the isoscalar monopole excitations in 208 Pb in a wide energy interval, which includes the isoscalar giant monopole resonance and its overtone. The energy-averaged strength functions of these resonances are also analyzed. Possibilities for using the mentioned transition density to description of inelastic α-scattering are discussed.PACS number(s): 21.60. Jz, 24.30.Cz, 21.60.Ev, 24.10.Nz

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