A study of the giant dipole resonance in doubly even tellurium and cerium isotopes

Leprêtre, A.; Beil, H.; Bergère, R.; Carlos, P.; Fagot, Joël; Miniac, A. De; Veyssière, A.; Miyase, H.

doi:10.1016/0375-9474(76)90011-7

Cited by 41 publications

(16 citation statements)

References 20 publications

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“…For the parameterization of the photonstrength functions (PSFs) single Lorentzians were used. The E1 parameters stem from a fit to (γ , n) data [36]. Parameters for the M1 PSF were determined according to a global parameterization of M1 spin-flip resonances as proposed in Ref.…”

Section: Resultsmentioning

confidence: 99%

Direct determination of ground-state transition widths of low-lying dipole states in 140 Ce with the self-absorption technique

et al. 2015

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The technique of self absorption has been applied for the first time to study the decay pattern of low-lying dipole states of 140 Ce. In particular, ground-state transition widths 0 and branching ratios 0/ to the ground state have been investigated in the energy domain of the pygmy dipole resonance. Relative self-absorption measurements allow for a model-independent determination of 0 . Without the need to perform a full spectroscopy of all decay channels, also the branching ratio to the ground state can be determined. The experiment on 140 Ce was conducted at the bremsstrahlung facility of the superconducting Darmstadt electron linear accelerator S-DALINAC. In total, the self-absorption and, thus, 0 were determined for 104 excited states of 140 Ce. The obtained results are presented and discussed with respect to simulations of γ cascades using the DICEBOX code.

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Section: Resultsmentioning

confidence: 99%

Direct determination of ground-state transition widths of low-lying dipole states in 140 Ce with the self-absorption technique

et al. 2015

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“…In Fig. 2 the derived cross-section data are compared to experimental data from measurements using the positronannihilation in-flight technique [36]. Our experimental crosssection results are systematically smaller than the ones of A. Lepretre et al However, the experimental results of the Saclay group are systematically higher compared to other experiments as observed for various reactions [37].…”

Section: Resultsmentioning

confidence: 51%

Determination of theCe142(γ,n)cross section using quasi-monoenergetic Compton backscattered
Sauerwein
¹
,
Sonnabend
²
,
Fritzsche
³

et al. 2014
Phys. Rev. C

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We describe an approach to calibrate SEE-based detectors in monoenergetic fields and apply the resulting semi-empiric responses to more general mixed-field cases in which a broad variety of particle species and energy spectra are involved. The calibration of the response functions is based both on experimental proton and neutron data and considerations derived from Monte Carlo simulations using the FLUKA code. The application environments include the quasi-monoenergetic neutrons at RCNP, the atmospheric-like VESUVIO spallation spectrum and the CHARM high-energy accelerator test facility.

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“…Results are shown on the left side of Fig. 4 together with data from a (γ, n) experiment [11]. The extrapolation of the GDR to energies below the neutron separation threshold underestimates the experimental values between 6.5 MeV and 8 MeV, while it seems to overestimate the absolute values for the region below 6.5 MeV.…”

Section: Experiments and Preliminary Resultsmentioning

confidence: 90%

Decay pattern of the Pygmy Dipole Resonance in¹³⁰Te

Isaak

Beller

Fiori

et al. 2014

EPJ Web of Conferences

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Abstract. The electric dipole strength distribution in 130 Te has been investigated using the method of Nuclear Resonance Fluorescence. The experiments were performed at the Darmstadt High Intensity Photon Setup using bremsstrahlung as photon source and at the High Intensity γ-Ray Source, where quasi-monochromatic and polarized photon beams are provided. Average decay properties of 130 Te below the neutron separation energy are determined. Comparing the experimental data to the predictions of the statistical model indicate, that nuclear structure effects play an important role even at sufficiently high excitation energies. Preliminary results will be presented.

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A study of the giant dipole resonance in doubly even tellurium and cerium isotopes

Cited by 41 publications

References 20 publications

Direct determination of ground-state transition widths of low-lying dipole states in 140 Ce with the self-absorption technique

Direct determination of ground-state transition widths of low-lying dipole states in 140 Ce with the self-absorption technique

Determination of theCe142(γ,n)cross section using quasi-monoenergetic Compton backscattered
Sauerwein
¹
,
Sonnabend
²
,
Fritzsche
³

et al. 2014
Phys. Rev. C

Decay pattern of the Pygmy Dipole Resonance in¹³⁰Te

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A study of the giant dipole resonance in doubly even tellurium and cerium isotopes

Cited by 41 publications

References 20 publications

Direct determination of ground-state transition widths of low-lying dipole states in 140 Ce with the self-absorption technique

Direct determination of ground-state transition widths of low-lying dipole states in 140 Ce with the self-absorption technique

Determination of theCe142(γ,n)cross section using quasi-monoenergetic Compton backscatteredSauerwein1, Sonnabend2, Fritzsche3 et al. 2014Phys. Rev. C

Decay pattern of the Pygmy Dipole Resonance in130Te

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Determination of theCe142(γ,n)cross section using quasi-monoenergetic Compton backscattered
Sauerwein
¹
,
Sonnabend
²
,
Fritzsche
³

et al. 2014
Phys. Rev. C

Decay pattern of the Pygmy Dipole Resonance in¹³⁰Te