Electromagnetic capture into theE x=7.56 MeV resonant state in15O

Krolle, D.; Langanke, K.

doi:10.1007/bf01295251

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“…We have calculated these scattering states from (2) adopting the potential form factor as defined in (5). The parameters Wz, W~ s and a have been adjusted to the experimental p+c~ phase shifts at low energies as determined in Ref.…”

Section: Resultsmentioning

confidence: 99%

“…Motivated by the successful application of a potential model description of nuclear bremsstrahlung in several nuclear systems [3][4][5][6] we have used this model to calculate various capture cross sections into the 5Li ground state which we described as a resonance of the p + e system 9 The aim of the present paper is in particular to calculate an estimate for intrastate M 1 and E2 transitions within the 5Li ground state 9 Furthermore, we will subsequently study competing resonant and direct electromagnetic capture reactions into this state in order to find out whether an experimental observation of the predicted novel type of v-ray emission is also hampered by these processes.…”

Section: Introductionmentioning

confidence: 99%

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Intrastate ?-transitions: A spectroscopic tool?

Krolle

Langanke

Rolfs

1987

Z. Physik A - Atomic Nuclei

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In the framework of a potential model we have calculated the various bremsstrahlung cross sections into the SLi ground state, including M1 and E2 7-transitions leading from the high energy wing of the 5Li ground state resonance into states belonging to the same resonance at lower energy (intrastate transition). Our calculation supports the hypothesis of Schmalbrock et al. [1] that intrastate transitions of M 1 and E2 multipolarity exist. While we find a maximum cross section of roughly 1.4 nb for the E2 transition, we predict the cross sections for M1 intrastate transition to be less than 3.10 -5 nb. An experimental observation of the intrastate 7-ray emission appears to be very difficult due to the dominance of competing resonant (M 1) and direct (E 1) capture processes.Schmalbrock et al. have suggested to deduce magnetic dipole and electric quadrupole moments of resonant states from the measurements of the respective M 1 and E 2 intrastate transitions. We will show that the M1 intrastate cross sections do not yield the appropriate information to determine the magnetic dipole moment. We will also discuss that E2 intrastate transitions do not seem to be a suited tool to find the quadrupole moment of an unstable state.

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Section: Resultsmentioning

confidence: 99%