Three-body model analysis of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>α</mml:mi><mml:mo>+</mml:mo><mml:mi>d</mml:mi></mml:mrow></mml:math>elastic scattering and the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>2</mml:mn></mml:msup></mml:math>H(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mspace width="-0.16em" /><mml:mi>γ

Kikuchi, Yoshihiro; Kurihara, Nozomi; Wano, Atsushi; Katō, Kiyoshi; Myo, Takayuki; Takashina, Masaaki

doi:10.1103/physrevc.84.064610

Cited by 19 publications

(54 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6 He + 209 Bi scattering at 19 and 22.5 MeV near the Coulomb barrier, the measured total reaction cross sections are largely enhanced in comparison with that for 6 Li + 209 Bi scattering at 29.9 and 32.8 MeV near the Coulomb barrier [26,27]. Keeley et al [28] analyzed the 6 He + 209 Bi scattering with three-body CDCC in which the 6 He + 209 Bi system was assumed to be a 2 n + 4 He + 209 Bi three-body system, i.e., a pair of extra neutrons in 6 He was treated as a * s-watanabe@phys.kyushu-u.ac.jp † matsumoto@phys.kyushu-u.ac.jp ‡ minomo@phys.kyushu-u.ac.jp § yahiro@phys.kyushu-u.ac.jp single particle, dineutron ( 2 n).…”

Section: Formentioning

confidence: 86%

“…Keeley et al [28] analyzed the 6 He + 209 Bi scattering with three-body CDCC in which the 6 He + 209 Bi system was assumed to be a 2 n + 4 He + 209 Bi three-body system, i.e., a pair of extra neutrons in 6 He was treated as a * s-watanabe@phys.kyushu-u.ac.jp † matsumoto@phys.kyushu-u.ac.jp ‡ minomo@phys.kyushu-u.ac.jp § yahiro@phys.kyushu-u.ac.jp single particle, dineutron ( 2 n). The enhancement of the total reaction cross section of the 6 He + 209 Bi scattering is found to be due to the electric dipole (E1) excitation of 6 He to its continuum states [29], i.e., Coulomb breakup of 6 He, which is almost absent in the 6 Li + 209 Bi scattering. The three-body CDCC calculation, however, does not reproduce the angular distribution of the measured elastic cross section and overestimates the measured total reaction cross section by a factor of 2.5.…”

Section: Formentioning

confidence: 99%

See 1 more Smart Citation

Effects of four-body breakup on6Li elastic scattering near the Coulomb barrier

et al. 2012

View full text Add to dashboard Cite

We investigate projectile breakup effects on 6 Li+ 209 Bi elastic scattering near the Coulomb barrier with the four-body version of the continuum-discretized coupled-channels method (four-body CDCC). This is the first application of four-body CDCC to 6 Li elastic scattering. The elastic scattering is well described by the p+n+ 4 He+ 209 Bi four-body model. We propose a reasonable three-body model for describing the four-body scattering, clarifying four-body dynamics of the elastic scattering.PACS numbers: 24.10. Eq, 25.60.Gc, 25.70.De Introduction. Plenty of nuclei are considered to have twocluster or three-cluster configurations as their main components. Three-cluster dynamics is, however, nontrivial compared with two-cluster dynamics. Systematic understanding of three-cluster dynamics is hence important. There are many nuclei that can be described by three-cluster models. For example, low-lying states of 6 He and 6 Li are explained by N + N + 4 He three-body models [1][2][3][4][5][6], where N stands for a nucleon. The comparison of the two nuclei is important to see the difference between dineutron and proton-neutron correlations. Two-neutron halo nuclei such as 11 Li, 14 Be, and 22 C are reasonably described by an n + n + X three-cluster model, where X is a core nucleus. Properties of these threecluster configurations should be confirmed by measuring scattering of the nuclei and analyzing the measured cross sections with accurate reaction theories. The reactions are essentially four-body scattering composed of three constituents of projectile and a target nucleus. Accurate theoretical description of four-body scattering is thus an important subject in nuclear physics.The continuum-discretized coupled-channels method (CDCC) is a fully quantum-mechanical method of describing not only three-body scattering but also four-body scattering [7][8][9]. CDCC has succeeded in reproducing experimental data on both three-and four-body scattering. The theoretical foundation of CDCC is shown with the distorted Faddeev equation [10][11][12]. CDCC for four-body (three-body) scattering is often called four-body (three-body) CDCC; see Refs [13][14][15][16][17][18][19][20][21][22][23][24][25] and references therein for four-body CDCC. So far four-body CDCC was applied to only 6 He scattering.

show abstract

Section: Formentioning

confidence: 86%

Section: Formentioning

confidence: 99%

Effects of four-body breakup on6Li elastic scattering near the Coulomb barrier

et al. 2012

View full text Add to dashboard Cite

show abstract

“…The TOSM wave function is expanded in terms of the shell model basis states and hence, is naively difficult to describe the tail component of the spatially extended clustering states, such as the 3α state in the excited states of 12 C [46]. Similarly, 6 Li with the T = 0 states is considered to need the clustering component of α+d in addition to the shell model like one [27,28]. The lacking of the cluster components loses some amount of the binding energy of 6 Li in TOSM.…”

Section: LImentioning

confidence: 99%

“…We investigate the systematic role of the tensor force in 5−9 Li. It is interesting to see the effect of tensor force on the structures of 5,6 Li [27,28]. In 6 Li, the isospin T = 0 and T = 1 states coexist in the low excitation energy region.…”

Section: Introductionmentioning

confidence: 99%

Tensor-optimized shell model for the Li isotopes with a bare nucleon-nucleon interaction

Myo¹,

Umeya²,

Toki³

et al. 2012

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

We study the Li isotopes systematically in terms of the tensor-optimized shell model (TOSM) by using a bare nucleon-nucleon interaction as the AV8 ′ interaction. The short-range correlation is treated in the unitary correlation operator method (UCOM). Using the TOSM+UCOM approach, we investigate the role of the tensor force on each spectrum of the Li isotopes. It is found that the tensor force produces quite a characteristic effect on various states in each spectrum and those spectra are affected considerably by the tensor force. The energy difference between the spin-orbit partner, the p 1/2 and p 3/2 orbits of the last neutron, in 5 Li is caused by opposite roles of the tensor correlation. In 6 Li, the spin-triplet state in the LS coupling configuration is favored energetically by the tensor force in comparison with jj coupling shell model states. In 7,8,9 Li, the low-lying states containing extra neutrons in the p 3/2 orbit are favored energetically due to the large tensor contribution to allow the excitation from the 0s-orbit to the p 1/2 orbit by the tensor force. Those three nuclei show the jj coupling character in their ground states which is different from 6 Li.

show abstract

“…Results for light nuclei using CSM have been obtained successfully for energies, decay widths, spectroscopic factors, and for the breakup strengths induced by the Coulomb excitations [28,29], monopole transition [24], and one-neutron removal [23]. Recently, CSM has been developed to apply to the nuclear reaction methods such as the scattering amplitude calculation [30], Lippmann-Schwinger equation [31,32], and the continuum-discretized coupledchannels (CDCC) method [33].…”

Section: Introductionmentioning

confidence: 99%

Five-body resonances of8C using the complex scaling method

2012

Self Cite

View full text Add to dashboard Cite

We study the resonance spectroscopy of the proton-rich nucleus 8 C in the α + p + p + p + p cluster model. Many-body resonances are treated on the correct boundary condition as the Gamow states using the complex scaling method. We obtain the ground state of 8 C as a five-body resonance for the first time, which has dominantly the subclosed (p 3/2 ) 4 configuration and agrees with the recent experiment for energy and decay width. We predict the second 0 + state with the excitation energy of 5.6 MeV, which corresponds to the 2p2h state from the ground state. We evaluate the occupation numbers of four valence-protons in the 8 C states and also the J π distribution of proton-pair numbers of the two 0 + states of 8 C. The ground state involves a large amount of the 2 + proton-pair fraction, while the excited 0 + 2 state almost consists of two of the 0 + proton pairs, which can be understood from the (p 3/2 ) 2 (p 1/2 ) 2 configuration. We also discuss the mirror symmetry between 8 C and 8 He with an α+four nucleon picture. It is found that the 0 + states retain the mirror symmetry well for the configuration properties of two nuclei.

show abstract

Three-body model analysis ofα+delastic scattering and the2H(α,γ

Cited by 19 publications

References 33 publications

Effects of four-body breakup on6Li elastic scattering near the Coulomb barrier

Effects of four-body breakup on6Li elastic scattering near the Coulomb barrier

Tensor-optimized shell model for the Li isotopes with a bare nucleon-nucleon interaction

Five-body resonances of8C using the complex scaling method

Contact Info

Product

Resources

About