Phase shift calculations on αα scattering

Schmid, Erich W.; Wildermuth, K.

doi:10.1016/0029-5582(61)90105-5

Cited by 111 publications

(44 citation statements)

References 17 publications

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“…The effective α − α potential V 2α is constructed by the folding procedure from an effective two-nucleon force including the proton-proton Coulomb force. Here we take the Schmid-Wildermuth (SW) force [90] as the effective N N force. This folded α − α potential reproduces nicely the α − α scattering phase shifts and the energies of the 8 Be ground-band state (J π = 0 + − 2 + − 4 + ) within the framework of the 2α cluster model.…”

Section: Structure Of 13 C In the Four-body Cluster Modelmentioning

confidence: 99%

Electric dipole moment of C13

et al. 2017

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We calculate for the first time the electric dipole moment (EDM) of 13 C generated by the isovector CP-odd pion exchange nuclear force in the α-cluster model, which describes well the structures of low lying states of the 13 C nucleus. The linear dependence of the EDM of 13 C on the neutron EDM and the isovector CP-odd nuclear coupling is found to be d13 C = −0.33dn − 0.0020Ḡ(1) π . The linear enhancement factor of the CP-odd nuclear coupling is smaller than that of the deuteron, due to the difference of the structure between the 1/2 − 1 state and the opposite parity (1/2 + ) states. We clarify the role of the structure played in the enhancement of the EDM. This result provides good guiding principles to search for other nuclei with large enhancement factor. We also mention the role of the EDM of 13 C in determining the new physics beyond the standard model.

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Section: Structure Of 13 C In the Four-body Cluster Modelmentioning

confidence: 99%

Electric dipole moment of C13

et al. 2017

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“…For the α-α interaction V αα we employ the same potential as used in Ref. [11], which is a folding potential of the effective NN interaction [17] and the Coulomb interaction. The pseudopotential V PF = λ| PF PF | is the projection operator to remove the Pauli forbidden states from the relative motions of α-α and α-n [18].…”

Section: Introductionmentioning

confidence: 99%

Photodisintegration cross section ofBe9up to 16 MeV in theα + α + nthree-body model

et al. 2016

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The photodisintegration of 9 Be in the energy region lower than E γ = 16 MeV is investigated by using the α + α + n three-body model and the complex scaling method. The cross section exhibits two aspects in two different energy regions. In the low-energy region up to E γ = 6 MeV, the cross section is explained by the transition strengths into the excited resonant states of 9 Be, while the dipole transition into the nonresonant continuum states of 8 Be(2 + ) + n dominates the cross section in the energy region of 6 E γ 16 MeV. Furthermore, it is shown that the dipole strength at E γ ∼ 8 MeV is understood to be caused by the single-neutron excitation from the 8 Be(2 + ) ⊗ νp 3/2 configuration in the ground state.

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“…We here employ the KKNN potential [13] for V αn subsystem. The V αα is the potential of a subsystem for the α + α interaction and we apply a folding potential [14] of the effective nuclear and Coulomb forces. The three-body potential V 3 is explicitly given as…”

Section: Theoretical Framework 21 Three-body Modelmentioning

confidence: 99%

Photodisintegration of⁹Be and the importance of the unbound 1/2⁺state

Odsuren

Kikuchi

Myo

et al. 2016

EPJ Web of Conferences

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Abstract. The photodisintegration cross section of the 9 Be(1/2 + ) state is investigated in a framework of the α + α + n three-body model. The 1/2 + state of 9 Be locates just above the three-body threshold, and the s-wave neutron property of this state is a long-standing problem. It has been a topic of quite interest in relation to the breakup mechanism of 9 Be into the 8 Be(0 + ) + n and (α + α + n) channels.

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Phase shift calculations on αα scattering

Cited by 111 publications

References 17 publications

Electric dipole moment of C13

Electric dipole moment of C13

Photodisintegration cross section ofBe9up to 16 MeV in theα + α + nthree-body model

Photodisintegration of⁹Be and the importance of the unbound 1/2⁺state

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Phase shift calculations on αα scattering

Cited by 111 publications

References 17 publications

Electric dipole moment of C13

Electric dipole moment of C13

Photodisintegration cross section ofBe9up to 16 MeV in theα + α + nthree-body model

Photodisintegration of9Be and the importance of the unbound 1/2+state

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Photodisintegration of⁹Be and the importance of the unbound 1/2⁺state