Lifetime measurements with the Doppler Shift Attenuation Method using a thick homogeneous production target - Verification of the method
Ertoprak, A., Cederwall, B., Jakobsson, U., Nyako, B. M., Nyberg, J., Davies, P., Doncel, M., De France, G., Kuti, I., Napoli, D. R., Wadsworth, R., Chugre, S.S., Raut, R., Akkus, B., Al-Azri, H., Algora, A., De Angelis, G., Ata, A., Bäck, T., . . . Xiao, Z. G. (2017). Lifetime measurements with the Doppler Shift Attenuation Method using a thick homogeneous production target - Verification of the method. Acta Physica Polonica B, 48(3), 325-329. https://doi.org/10.5506/APhysPolB.48.325
Julkaistu sarjassa
Acta Physica Polonica BPäivämäärä
2017Tekijänoikeudet
© the Authors 2017. This is an open access article distributed under the terms of a Creative Commons License. Funded by SCOAP3.
Doppler Shift Attenuation Method (DSAM) analysis of excited-state
lifetimes normally employs thin production targets mounted on a thick
stopper foil (“backing”) serving to slow down and stop the recoiling nuclei
of interest in a well-defined manner. Use of a thick, homogeneous production
target leads to a more complex analysis as it results in a substantial
decrease in the energy of the incident projectile which traverses the target
with an associated change in the production cross section of the residues
as a function of penetration depth. Here, a DSAM lifetime analysis using a thick homogeneous target has been verified using the Doppler broadened
lineshapes of γ rays following the decay of highly excited states in the
semi-magic (N = 50) nucleus 94Ru. Lifetimes of excited states in the 94Ru
nucleus have been obtained using a modified version of the LINESHAPE
package from the Doppler broadened lineshapes resulting from the emission
of the γ rays, while the residual nuclei were slowing down in the thick
(6 mg/cm2
) metallic 58Ni target. The results have been validated by comparison
with a previous measurement using a different (RDDS) technique.
...
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Jagellonian UniversityISSN Hae Julkaisufoorumista
0587-4254Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/26986663
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