Systematic study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>L</mml:mi><mml:mo>⩽</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:math>giant resonances in Sm isotopes via multipole decomposition analysis

Itoh, Masatoshi; Sakaguchi, H.; Uchida, M.; Ishikawa, T.; Kawabata, T.; Murakami, T.; Takeda, Hiroyuki; Taki, Toshihiko; Terashima, S.; Tsukahara, N.; Yasuda, Yusuke; Yosoi, M.; Garg, U.; Hedden, M.; Kharraja, B.; Koss, Michael; Nayak, B. K.; Zhu, S.; Fujimura, H.; Fujiwara, M̄.; Hara, K.; Yoshida, H. P.; Akimune, H.; Harakeh, Mohsen; Volkerts, M.

doi:10.1103/physrevc.68.064602

Cited by 67 publications

(77 citation statements)

References 31 publications

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“…With increase in the mass number, the peak energy of the ISGQR becomes smaller. This is consistent with the experiment on the systematic observation of the ISGQR energy in the Sm isotopes [39,40]. Figure 3 shows the centroid energy of the ISGQR in the Sm isotopes.…”

Section: Giant Resonancessupporting

confidence: 89%

Shape evolution of giant resonances in Nd and Sm isotopes

Yoshida

Nakatsukasa

2013

Phys. Rev. C

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Giant multipole resonances in Nd and Sm isotopes are studied by employing the quasiparticle-random-phase approximation on the basis of the Skyrme energy-density-functional method. Deformation effects on giant resonances are investigated in these isotopes which manifest a typical nuclear shape change from spherical to prolate shapes. The peak energy, the broadening, and the deformation splitting of the isoscalar giant monopole (ISGMR) and quadrupole (ISGQR) resonances agree well with measurements. The magnitude of the peak splitting and the fraction of the energy-weighted strength in the lower peak of the ISGMR reflect the nuclear deformation. The experimental data on ISGMR, ISGDR, and ISGQR are consistent with the nuclear-matter incompressibility $K \simeq 210-230$ MeV and the effective mass $m^*_0/m \simeq 0.8-0.9$. However, the high-energy octupole resonance (HEOR) in $^{144}$Sm seems to indicates a smaller effective mass, $m^*_0/m \simeq 0.7-0.8$. A further precise measurement of HEOR is desired to determine the effective mass.Comment: Submitted to Phys. Rev.

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Section: Giant Resonancessupporting

confidence: 89%

Shape evolution of giant resonances in Nd and Sm isotopes

Yoshida

Nakatsukasa

2013

Phys. Rev. C

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“…These particles caused continuous background in excitation-energy spectra at forward angles. These background events were removed using the vertical position information of scattered particles at the focal plane because α particles scattered from the target were vertically focused near the focal plane whereas background particles scattered at different positions were not focused [5]. Scattering angles within the angular acceptance of the GR spectrometer were calibrated using the sieve slit as reported in Ref.…”

Section: B Data Reduction and Cross Sectionsmentioning

confidence: 99%

“…The parameter value of β = −1.9 was proposed in Ref. [40], and widely used for the analysis of inelastic alpha scattering [2,[4][5][6][7][8][9][10]13,20,25,28,29]. On the other hand, the parameter value of β = 0.0 means that the interaction is independent of the density of the target nucleus.…”

Section: A Optical-model Potential For the Elastic α Scattering And mentioning

confidence: 99%

“…Isoscalar giant monopole resonances (ISGMRs) and isoscalar giant dipole resonances (ISGDR) are extensively examined by the MDA for the inelastic α scattering [1][2][3][4][5][6][7][8][9][10]. The ISGMR and ISGDR strength distributions were successfully extracted from continuous excitation-energy spectra by the MDA.…”

Section: Introductionmentioning

confidence: 99%

“…As described above, measurements of isoscalar naturalparity transition strengths by means of inelastic α scattering are widely performed [1][2][3][4][5][6][7][8][9][10]13,25,[27][28][29], assuming the linear proportional relation between the cross sections and the square of the transition matrix elements. However, a contradictory result to the linear proportional relation was reported in the monopole excitation to the Hoyle state from the ground state in 12 C. The isoscalar monopole strength determined from the inelastic electron scattering exhausts about 15% of the energy-weighted sum-rule (EWSR) strength [24,30], but that from the inelastic α scattering exhausts as small as 7.6% [27].…”

Section: Introductionmentioning

confidence: 99%

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Systematic analysis of inelastic α scattering off self-conjugate A=4n nuclei

Adachi¹,

Kawabata

Minomo

et al. 2018

Phys. Rev. C

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We systematically measured the differential cross sections of inelastic α scattering off self-conjugate A = 4n nuclei at two incident energies E α = 130 MeV and 386 MeV at Research Center for Nuclear Physics, Osaka University. The measured cross sections were analyzed by the distorted-wave Born-approximation (DWBA) calculation using the single-folding potentials, which are obtained by folding macroscopic transition densities with the phenomenological αN interaction. The DWBA calculation with the density-dependent αN interaction systematically overestimates the cross sections for the ΔL = 0 transitions. However, the DWBA calculation using the density-independent αN interaction reasonably well describes all the transitions with ΔL = 0-4. We examined uncertainties in the present DWBA calculation stemming from the macroscopic transition densities, distorting potentials, phenomenological αN interaction, and coupled channel effects in 12 C. It was found that the DWBA calculation is not sensitive to details of the transition densities nor the distorting potentials, and the phenomenological density-independent αN interaction gives reasonable results. The coupled-channel effects are negligibly small for the 2 + 1 and 3 − 1 states in 12 C, but not for the 0 + 2 state. However, the DWBA calculation using the density-independent interaction at E α = 386 MeV is still reasonable even for the 0 + 2 state. We concluded that the macroscopic DWBA calculations using the density-independent interaction are reliably applicable to the analysis of inelastic α scattering at E α ∼ 100 MeV/u.

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Data Analysis

Patel¹

2015

A Study of the Isoscalar Giant Monopole Resonance

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Systematic study ofL⩽3giant resonances in Sm isotopes via multipole decomposition analysis

Cited by 67 publications

References 31 publications

Shape evolution of giant resonances in Nd and Sm isotopes

Shape evolution of giant resonances in Nd and Sm isotopes

Systematic analysis of inelastic α scattering off self-conjugate A=4n nuclei

Data Analysis

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