Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with Ex ≈ 2 MeV/u

Y. Lou; M. Gonin; R. Wada; K. Hagel; J. Li; B. Xiao; M. Gui; D. Utley; R. Tezkratt; L. Cooke; T. Botting; B. Hurst; D. O'Kelly; G. Mouchaty; R. P. Schmitt; W. Turmel; J. B. Natowitz; D. Fabris; G. Nebbia; G. Viesti; J. Ruiz; B. Burch; F. Gramegna; M. Poggi; G. Prete; M. E. Brandan; A. Menchaca-Rocha

doi:10.1016/0375-9474(94)00482-3

Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with E_x ≈ 2 MeV/u

Y. Lou, M. Gonin, R. Wada, K. Hagel, J. Li, B. Xiao, M. Gui, D. Utley, R. Tezkratt, L. Cooke, T. Botting, B. Hurst, D. O'Kelly, G. Mouchaty, R. P. Schmitt, W. Turmel, J. B. Natowitz, D. Fabris, G. Nebbia, G. ViestiJ. Ruiz, B. Burch, F. Gramegna, M. Poggi, G. Prete, M. E. Brandan, A. Menchaca-Rocha

Research output: Contribution to journal › Article › peer-review

Abstract

Light-particle emission from the fission reactions of ⁶³Cu + ^92,100Mo and ²⁰Ne + ^144,148,154Sm has been studied using the Texas A&M Neutron Ball detector. Linearmomentuum transfers (LMT) were determined from fission-fragment-folding-angle measurements. An increase of neutron multiplicity with apparent linear-momentum transfer was seen. The initial excitation energies of the compound nuclei are estimated from the observed linear-momentum transfer and also reconstructed from the measured multiplicities and average energies of neutrons, protons and α-particles. The results of the two methods are in good agreement. The observed neutron multiplicities show a strong increase with increasing neutron-to-proton ratio of the composite system. The light-particle multiplicities are compared with calculated values using the statistical code GEMINI. The effect of the dynamic fission delay on the total light-particle multiplicities is explored and found to be small.

Original language	English
Pages (from-to)	373-396
Number of pages	24
Journal	Nuclear Physics A
Volume	581
Issue number	2
DOIs	https://doi.org/10.1016/0375-9474(94)00482-3
Publication status	Published - 9 Jan 1995
Externally published	Yes

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Lou, Y., Gonin, M., Wada, R., Hagel, K., Li, J., Xiao, B., Gui, M., Utley, D., Tezkratt, R., Cooke, L., Botting, T., Hurst, B., O'Kelly, D., Mouchaty, G., Schmitt, R. P., Turmel, W., Natowitz, J. B., Fabris, D., Nebbia, G., ... Menchaca-Rocha, A. (1995). Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with E_x ≈ 2 MeV/u. Nuclear Physics A, 581(2), 373-396. https://doi.org/10.1016/0375-9474(94)00482-3

@article{891073a17dce4a8196601d86411cc3d4,

title = "Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with Ex ≈ 2 MeV/u",

abstract = "Light-particle emission from the fission reactions of 63Cu + 92,100Mo and 20Ne + 144,148,154Sm has been studied using the Texas A\&M Neutron Ball detector. Linearmomentuum transfers (LMT) were determined from fission-fragment-folding-angle measurements. An increase of neutron multiplicity with apparent linear-momentum transfer was seen. The initial excitation energies of the compound nuclei are estimated from the observed linear-momentum transfer and also reconstructed from the measured multiplicities and average energies of neutrons, protons and α-particles. The results of the two methods are in good agreement. The observed neutron multiplicities show a strong increase with increasing neutron-to-proton ratio of the composite system. The light-particle multiplicities are compared with calculated values using the statistical code GEMINI. The effect of the dynamic fission delay on the total light-particle multiplicities is explored and found to be small.",

author = "Y. Lou and M. Gonin and R. Wada and K. Hagel and J. Li and B. Xiao and M. Gui and D. Utley and R. Tezkratt and L. Cooke and T. Botting and B. Hurst and D. O'Kelly and G. Mouchaty and Schmitt, \{R. P.\} and W. Turmel and Natowitz, \{J. B.\} and D. Fabris and G. Nebbia and G. Viesti and J. Ruiz and B. Burch and F. Gramegna and M. Poggi and G. Prete and Brandan, \{M. E.\} and A. Menchaca-Rocha",

year = "1995",

month = jan,

day = "9",

doi = "10.1016/0375-9474(94)00482-3",

language = "English",

volume = "581",

pages = "373--396",

journal = "Nuclear Physics A",

issn = "0375-9474",

number = "2",

}

Lou, Y, Gonin, M, Wada, R, Hagel, K, Li, J, Xiao, B, Gui, M, Utley, D, Tezkratt, R, Cooke, L, Botting, T, Hurst, B, O'Kelly, D, Mouchaty, G, Schmitt, RP, Turmel, W, Natowitz, JB, Fabris, D, Nebbia, G, Viesti, G, Ruiz, J, Burch, B, Gramegna, F, Poggi, M, Prete, G, Brandan, ME & Menchaca-Rocha, A 1995, 'Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with E_x ≈ 2 MeV/u', Nuclear Physics A, vol. 581, no. 2, pp. 373-396. https://doi.org/10.1016/0375-9474(94)00482-3

TY - JOUR

T1 - Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with Ex ≈ 2 MeV/u

AU - Lou, Y.

AU - Gonin, M.

AU - Wada, R.

AU - Hagel, K.

AU - Li, J.

AU - Xiao, B.

AU - Gui, M.

AU - Utley, D.

AU - Tezkratt, R.

AU - Cooke, L.

AU - Botting, T.

AU - Hurst, B.

AU - O'Kelly, D.

AU - Mouchaty, G.

AU - Schmitt, R. P.

AU - Turmel, W.

AU - Natowitz, J. B.

AU - Fabris, D.

AU - Nebbia, G.

AU - Viesti, G.

AU - Ruiz, J.

AU - Burch, B.

AU - Gramegna, F.

AU - Poggi, M.

AU - Prete, G.

AU - Brandan, M. E.

AU - Menchaca-Rocha, A.

PY - 1995/1/9

Y1 - 1995/1/9

N2 - Light-particle emission from the fission reactions of 63Cu + 92,100Mo and 20Ne + 144,148,154Sm has been studied using the Texas A&M Neutron Ball detector. Linearmomentuum transfers (LMT) were determined from fission-fragment-folding-angle measurements. An increase of neutron multiplicity with apparent linear-momentum transfer was seen. The initial excitation energies of the compound nuclei are estimated from the observed linear-momentum transfer and also reconstructed from the measured multiplicities and average energies of neutrons, protons and α-particles. The results of the two methods are in good agreement. The observed neutron multiplicities show a strong increase with increasing neutron-to-proton ratio of the composite system. The light-particle multiplicities are compared with calculated values using the statistical code GEMINI. The effect of the dynamic fission delay on the total light-particle multiplicities is explored and found to be small.

AB - Light-particle emission from the fission reactions of 63Cu + 92,100Mo and 20Ne + 144,148,154Sm has been studied using the Texas A&M Neutron Ball detector. Linearmomentuum transfers (LMT) were determined from fission-fragment-folding-angle measurements. An increase of neutron multiplicity with apparent linear-momentum transfer was seen. The initial excitation energies of the compound nuclei are estimated from the observed linear-momentum transfer and also reconstructed from the measured multiplicities and average energies of neutrons, protons and α-particles. The results of the two methods are in good agreement. The observed neutron multiplicities show a strong increase with increasing neutron-to-proton ratio of the composite system. The light-particle multiplicities are compared with calculated values using the statistical code GEMINI. The effect of the dynamic fission delay on the total light-particle multiplicities is explored and found to be small.

U2 - 10.1016/0375-9474(94)00482-3

DO - 10.1016/0375-9474(94)00482-3

M3 - Article

AN - SCOPUS:0001347967

SN - 0375-9474

VL - 581

SP - 373

EP - 396

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 2

ER -

Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with Ex ≈ 2 MeV/u

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Light-particle evaporation as a function of neutron excess for medium-mass compound nuclei with E_x ≈ 2 MeV/u