Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in 20Ne +159 Tb and 20Ne +169 Tm reactions between 8 and 16 MeV/nucleon

Th Keutgen; J. Cabrera; Y. El Masri; C. Ghisalberti; I. Tilquin; L. Lebreton; A. Ninane; J. Lehmann; V. Roberfroid; L. Michel; R. Régimbart; J. B. Natowitz; K. Hagel; R. Wada; R. J. Charity

doi:10.1016/s0375-9474(00)88564-4

Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in ²⁰Ne +¹⁵⁹ Tb and ²⁰Ne +¹⁶⁹ Tm reactions between 8 and 16 MeV/nucleon

Th Keutgen, J. Cabrera, Y. El Masri, C. Ghisalberti, I. Tilquin, L. Lebreton, A. Ninane, J. Lehmann, V. Roberfroid, L. Michel, R. Régimbart, J. B. Natowitz, K. Hagel, R. Wada, R. J. Charity

Department of Chemistry

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Abstract

We have undertaken a study of the thermal and the dynamical properties of fission and evaporation processes through the observation of neutron and light charged particle (LCP) emission (p, α) in collisions of ²⁰Ne +¹⁵⁹ Tb and ²⁰Ne +¹⁶⁹ Tm at 8, 10, 13 and 16 MeV/nucleon using the neutron multidetector DEMON. Both systems lead to the formation of compound nuclei (CN) with initial excitation energies (E*_x) ranging between 100 and 250 MeV. These CN, formed through complete (CF) or incomplete (IF) fusion reactions, decay through either fission or evaporation residue (ER) formation. Our experimental goal in this study is to establish, as a function of E*_x, i) σ_ER/σ_fission cross-section ratios, ii) pre- and post-scission neutron and LCP multiplicities with a clear cut assignment to CF and IF processes and iii) to try to consistently interpret these data in the framework of the recently modified statistical code GEMINI, including time-dependent fission width probabilities in order to establish the fission time scales.

Original language	English
Pages (from-to)	878c-881c
Journal	Nuclear Physics A
Volume	654
Issue number	1 SUPPL. 1
DOIs	https://doi.org/10.1016/s0375-9474(00)88564-4
State	Published - Jul 26 1999

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Keutgen, T., Cabrera, J., El Masri, Y., Ghisalberti, C., Tilquin, I., Lebreton, L., Ninane, A., Lehmann, J., Roberfroid, V., Michel, L., Régimbart, R., Natowitz, J. B., Hagel, K., Wada, R., & Charity, R. J. (1999). Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in ²⁰Ne +¹⁵⁹ Tb and ²⁰Ne +¹⁶⁹ Tm reactions between 8 and 16 MeV/nucleon. Nuclear Physics A, 654(1 SUPPL. 1), 878c-881c. https://doi.org/10.1016/s0375-9474(00)88564-4

@article{f7bb19d9936c4dada14067039fa02917,

title = "Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in 20Ne +159 Tb and 20Ne +169 Tm reactions between 8 and 16 MeV/nucleon",

abstract = "We have undertaken a study of the thermal and the dynamical properties of fission and evaporation processes through the observation of neutron and light charged particle (LCP) emission (p, α) in collisions of 20Ne +159 Tb and 20Ne +169 Tm at 8, 10, 13 and 16 MeV/nucleon using the neutron multidetector DEMON. Both systems lead to the formation of compound nuclei (CN) with initial excitation energies (E*x) ranging between 100 and 250 MeV. These CN, formed through complete (CF) or incomplete (IF) fusion reactions, decay through either fission or evaporation residue (ER) formation. Our experimental goal in this study is to establish, as a function of E*x, i) σER/σfission cross-section ratios, ii) pre- and post-scission neutron and LCP multiplicities with a clear cut assignment to CF and IF processes and iii) to try to consistently interpret these data in the framework of the recently modified statistical code GEMINI, including time-dependent fission width probabilities in order to establish the fission time scales.",

author = "Th Keutgen and J. Cabrera and \{El Masri\}, Y. and C. Ghisalberti and I. Tilquin and L. Lebreton and A. Ninane and J. Lehmann and V. Roberfroid and L. Michel and R. R{\'e}gimbart and Natowitz, \{J. B.\} and K. Hagel and R. Wada and Charity, \{R. J.\}",

year = "1999",

month = jul,

day = "26",

doi = "10.1016/s0375-9474(00)88564-4",

language = "English",

volume = "654",

pages = "878c--881c",

journal = "Nuclear Physics A",

issn = "0375-9474",

number = "1 SUPPL. 1",

}

Keutgen, T, Cabrera, J, El Masri, Y, Ghisalberti, C, Tilquin, I, Lebreton, L, Ninane, A, Lehmann, J, Roberfroid, V, Michel, L, Régimbart, R, Natowitz, JB, Hagel, K, Wada, R & Charity, RJ 1999, 'Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in ²⁰Ne +¹⁵⁹ Tb and ²⁰Ne +¹⁶⁹ Tm reactions between 8 and 16 MeV/nucleon', Nuclear Physics A, vol. 654, no. 1 SUPPL. 1, pp. 878c-881c. https://doi.org/10.1016/s0375-9474(00)88564-4

TY - JOUR

T1 - Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in 20Ne +159 Tb and 20Ne +169 Tm reactions between 8 and 16 MeV/nucleon

AU - Keutgen, Th

AU - Cabrera, J.

AU - El Masri, Y.

AU - Ghisalberti, C.

AU - Tilquin, I.

AU - Lebreton, L.

AU - Ninane, A.

AU - Lehmann, J.

AU - Roberfroid, V.

AU - Michel, L.

AU - Régimbart, R.

AU - Natowitz, J. B.

AU - Hagel, K.

AU - Wada, R.

AU - Charity, R. J.

PY - 1999/7/26

Y1 - 1999/7/26

N2 - We have undertaken a study of the thermal and the dynamical properties of fission and evaporation processes through the observation of neutron and light charged particle (LCP) emission (p, α) in collisions of 20Ne +159 Tb and 20Ne +169 Tm at 8, 10, 13 and 16 MeV/nucleon using the neutron multidetector DEMON. Both systems lead to the formation of compound nuclei (CN) with initial excitation energies (E*x) ranging between 100 and 250 MeV. These CN, formed through complete (CF) or incomplete (IF) fusion reactions, decay through either fission or evaporation residue (ER) formation. Our experimental goal in this study is to establish, as a function of E*x, i) σER/σfission cross-section ratios, ii) pre- and post-scission neutron and LCP multiplicities with a clear cut assignment to CF and IF processes and iii) to try to consistently interpret these data in the framework of the recently modified statistical code GEMINI, including time-dependent fission width probabilities in order to establish the fission time scales.

AB - We have undertaken a study of the thermal and the dynamical properties of fission and evaporation processes through the observation of neutron and light charged particle (LCP) emission (p, α) in collisions of 20Ne +159 Tb and 20Ne +169 Tm at 8, 10, 13 and 16 MeV/nucleon using the neutron multidetector DEMON. Both systems lead to the formation of compound nuclei (CN) with initial excitation energies (E*x) ranging between 100 and 250 MeV. These CN, formed through complete (CF) or incomplete (IF) fusion reactions, decay through either fission or evaporation residue (ER) formation. Our experimental goal in this study is to establish, as a function of E*x, i) σER/σfission cross-section ratios, ii) pre- and post-scission neutron and LCP multiplicities with a clear cut assignment to CF and IF processes and iii) to try to consistently interpret these data in the framework of the recently modified statistical code GEMINI, including time-dependent fission width probabilities in order to establish the fission time scales.

UR - https://www.scopus.com/pages/publications/0012141820

U2 - 10.1016/s0375-9474(00)88564-4

DO - 10.1016/s0375-9474(00)88564-4

M3 - Article

AN - SCOPUS:0012141820

SN - 0375-9474

VL - 654

SP - 878c-881c

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1 SUPPL. 1

ER -

Thermal and dynamical properties of fusion-fission and fusion-evaporation processes in ²⁰Ne +¹⁵⁹ Tb and ²⁰Ne +¹⁶⁹ Tm reactions between 8 and 16 MeV/nucleon

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