Angular distribution in the neutron-induced fission of actinides

L. S. Leong; L. Tassan-Got; D. Tarrio; L. Audouin; C. Paradela; I. Duran; C. Le Naour; S. Altstadt; J. Andrzejewsky; M. Barbagallo; V. Bécares; F. Bečvář; F. Belloni; E. Berthoumieux; J. Billowes; V. Boccone; D. Bosnar; M. Brugger; F. Calvino; M. Calviani; D. Cano-Ott; C. Carrapiço; F. Cerutti; E. Chiaveri; M. Chin; N. Colonna; G. Cortés; M. A. Cortés-Giraldo; M. Diakaki; C. Domingo-Pardo; R. Dressler; N. Dzysiuk; C. Eleftheriadis; A. Ferrari; K. Fraval; S. Ganesan; A. R. García; G. Giubrone; M. B. Gómez-Hornillos; I. F. Gonçalves; Romero González; E. Griesmayer; C. Guerrero; F. Gunsing; P. Gurusamy; D. G. Jenkins; E. Jericha; E. Kadi; F. Käppeler; D. Karadimos; N. Kivel; P. Koehler; M. Kokkoris; G. Korschinek; J. Kroll; M. Krtička; C. Langer; C. Lederer; H. Leeb; R. Losito; A. Manousos; J. Marganiec; C. Massimi; T. Martínez; P. F. Mastinu; M. Mastromarco; M. Meaze; A. Mengon; E. Mendoza; P. M. Milazzo; T. Mingrone; M. Mirea; W. Mondelaers; A. Pavlik; J. Perkowski; M. Pignatari; A. Plompen; J. Praena; J. M. Quesada; T. Rauscher; R. Reifhart; A. Riego; F. Roman; C. Rubbia; R. Sarmento; P. Schillebeeckx; S. Schmidt; D. Schumann; J. L. Taín; G. Tagliente; A. Tsinganis; S. Valenta; G. Vannini; V. Variale; P. Vaz; A. Ventura; R. Versaci; M. J. Vermeulen; V. Vlachoudis; V. Vlastou; A. Wallner; T. Ware; M. Weigand; C. Weiß; T. Wright; Gec Zç

doi:10.1051/epjconf/20136208003

Angular distribution in the neutron-induced fission of actinides

L. S. Leong, L. Tassan-Got, D. Tarrio, L. Audouin, C. Paradela, I. Duran, C. Le Naour, S. Altstadt, J. Andrzejewsky, M. Barbagallo, V. Bécares, F. Bečvář, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, F. Calvino, M. CalvianiD. Cano-Ott, C. Carrapiço, F. Cerutti, E. Chiaveri, M. Chin, N. Colonna, G. Cortés, M. A. Cortés-Giraldo, M. Diakaki, C. Domingo-Pardo, R. Dressler, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, K. Fraval, S. Ganesan, A. R. García, G. Giubrone, M. B. Gómez-Hornillos, I. F. Gonçalves, Romero González, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, D. G. Jenkins, E. Jericha, E. Kadi, F. Käppeler, D. Karadimos, N. Kivel, P. Koehler, M. Kokkoris, G. Korschinek, J. Kroll, M. Krtička, C. Langer, C. Lederer, H. Leeb, R. Losito, A. Manousos, J. Marganiec, C. Massimi, T. Martínez, P. F. Mastinu, M. Mastromarco, M. Meaze, A. Mengon, E. Mendoza, P. M. Milazzo, T. Mingrone, M. Mirea, W. Mondelaers, A. Pavlik, J. Perkowski, M. Pignatari, A. Plompen, J. Praena, J. M. Quesada, T. Rauscher, R. Reifhart, A. Riego, F. Roman, C. Rubbia, R. Sarmento, P. Schillebeeckx, S. Schmidt, D. Schumann, J. L. Taín, G. Tagliente, A. Tsinganis, S. Valenta, G. Vannini, V. Variale, P. Vaz, A. Ventura, R. Versaci, M. J. Vermeulen, V. Vlachoudis, V. Vlastou, A. Wallner, T. Ware, M. Weigand, C. Weiß, T. Wright, Gec Zç

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

Above 1 MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the fissioning nucleus. This effect has to be taken into account for the efficiency estimation of devices used for fission cross section measurements. In addition it bears information on the spin deposition mechanism and on the structure of transitional states. We designed and constructed a detection device, based on Parallel Plate Avalanche Counters (PPAC), for measuring the fission fragment angular distributions of several isotopes, in particular ²³²Th. The measurement has been performed at n-TOF at CERN taking advantage of the very broad energy spectrum of the neutron beam. Fission events were recognized by back to back detection in coincidence in two position-sensitive detectors surrounding the targets. The detection efficiency, depending mostly on the stopping of fission fragments in backings and electrodes, has been computed with a Geant4 simulation and validated by the comparison to the measured case of ²³⁵U below 3 keV where the emission is isotropic. In the case of ²³²Th, the result is in good agreement with previous data below 10 MeV, with a good reproduction of the structures associated to vibrational states and the opening of second chance fission. In the 14 MeV region our data are much more accurate than previous ones which are broadly scattered.

Original language	English
Title of host publication	Fission 2013 - 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy
DOIs	https://doi.org/10.1051/epjconf/20136208003
Publication status	Published - 2013
Externally published	Yes
Event	5th International Workshop on Nuclear Fission and Fission Product Spectroscopy, Fission 2013 - Caen, France Duration: 28 May 2013 → 31 May 2013

Publication series

Name	EPJ Web of Conferences
Volume	62
ISSN (Print)	2101-6275
ISSN (Electronic)	2100-014X

Conference

Conference	5th International Workshop on Nuclear Fission and Fission Product Spectroscopy, Fission 2013
Country/Territory	France
City	Caen
Period	28/05/13 → 31/05/13

Access to Document

10.1051/epjconf/20136208003

Cite this

Leong, L. S., Tassan-Got, L., Tarrio, D., Audouin, L., Paradela, C., Duran, I., Le Naour, C., Altstadt, S., Andrzejewsky, J., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calvino, F., ... Zç, G. (2013). Angular distribution in the neutron-induced fission of actinides. In Fission 2013 - 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy Article 08003 (EPJ Web of Conferences; Vol. 62). https://doi.org/10.1051/epjconf/20136208003

@inproceedings{ed4d583ebedc46aa84952a02700b55ec,

title = "Angular distribution in the neutron-induced fission of actinides",

abstract = "Above 1 MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the fissioning nucleus. This effect has to be taken into account for the efficiency estimation of devices used for fission cross section measurements. In addition it bears information on the spin deposition mechanism and on the structure of transitional states. We designed and constructed a detection device, based on Parallel Plate Avalanche Counters (PPAC), for measuring the fission fragment angular distributions of several isotopes, in particular 232Th. The measurement has been performed at n-TOF at CERN taking advantage of the very broad energy spectrum of the neutron beam. Fission events were recognized by back to back detection in coincidence in two position-sensitive detectors surrounding the targets. The detection efficiency, depending mostly on the stopping of fission fragments in backings and electrodes, has been computed with a Geant4 simulation and validated by the comparison to the measured case of 235U below 3 keV where the emission is isotropic. In the case of 232Th, the result is in good agreement with previous data below 10 MeV, with a good reproduction of the structures associated to vibrational states and the opening of second chance fission. In the 14 MeV region our data are much more accurate than previous ones which are broadly scattered.",

author = "Leong, {L. S.} and L. Tassan-Got and D. Tarrio and L. Audouin and C. Paradela and I. Duran and {Le Naour}, C. and S. Altstadt and J. Andrzejewsky and M. Barbagallo and V. B{\'e}cares and F. Be{\v c}v{\'a}{\v r} and F. Belloni and E. Berthoumieux and J. Billowes and V. Boccone and D. Bosnar and M. Brugger and F. Calvino and M. Calviani and D. Cano-Ott and C. Carrapi{\c c}o and F. Cerutti and E. Chiaveri and M. Chin and N. Colonna and G. Cort{\'e}s and Cort{\'e}s-Giraldo, {M. A.} and M. Diakaki and C. Domingo-Pardo and R. Dressler and N. Dzysiuk and C. Eleftheriadis and A. Ferrari and K. Fraval and S. Ganesan and Garc{\'i}a, {A. R.} and G. Giubrone and G{\'o}mez-Hornillos, {M. B.} and Gon{\c c}alves, {I. F.} and Romero Gonz{\'a}lez and E. Griesmayer and C. Guerrero and F. Gunsing and P. Gurusamy and Jenkins, {D. G.} and E. Jericha and E. Kadi and F. K{\"a}ppeler and D. Karadimos and N. Kivel and P. Koehler and M. Kokkoris and G. Korschinek and J. Kroll and M. Krti{\v c}ka and C. Langer and C. Lederer and H. Leeb and R. Losito and A. Manousos and J. Marganiec and C. Massimi and T. Mart{\'i}nez and Mastinu, {P. F.} and M. Mastromarco and M. Meaze and A. Mengon and E. Mendoza and Milazzo, {P. M.} and T. Mingrone and M. Mirea and W. Mondelaers and A. Pavlik and J. Perkowski and M. Pignatari and A. Plompen and J. Praena and Quesada, {J. M.} and T. Rauscher and R. Reifhart and A. Riego and F. Roman and C. Rubbia and R. Sarmento and P. Schillebeeckx and S. Schmidt and D. Schumann and Ta{\'i}n, {J. L.} and G. Tagliente and A. Tsinganis and S. Valenta and G. Vannini and V. Variale and P. Vaz and A. Ventura and R. Versaci and Vermeulen, {M. J.} and V. Vlachoudis and V. Vlastou and A. Wallner and T. Ware and M. Weigand and C. Wei{\ss} and T. Wright and Gec Z{\c c}",

year = "2013",

doi = "10.1051/epjconf/20136208003",

language = "English",

isbn = "9782759811236",

series = "EPJ Web of Conferences",

booktitle = "Fission 2013 - 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy",

note = "5th International Workshop on Nuclear Fission and Fission Product Spectroscopy, Fission 2013 ; Conference date: 28-05-2013 Through 31-05-2013",

}

Leong, LS, Tassan-Got, L, Tarrio, D, Audouin, L, Paradela, C, Duran, I, Le Naour, C, Altstadt, S, Andrzejewsky, J, Barbagallo, M, Bécares, V, Bečvář, F, Belloni, F, Berthoumieux, E, Billowes, J, Boccone, V, Bosnar, D, Brugger, M, Calvino, F, Calviani, M, Cano-Ott, D, Carrapiço, C, Cerutti, F, Chiaveri, E, Chin, M, Colonna, N, Cortés, G, Cortés-Giraldo, MA, Diakaki, M, Domingo-Pardo, C, Dressler, R, Dzysiuk, N, Eleftheriadis, C, Ferrari, A, Fraval, K, Ganesan, S, García, AR, Giubrone, G, Gómez-Hornillos, MB, Gonçalves, IF, González, R, Griesmayer, E, Guerrero, C, Gunsing, F, Gurusamy, P, Jenkins, DG, Jericha, E, Kadi, E, Käppeler, F, Karadimos, D, Kivel, N, Koehler, P, Kokkoris, M, Korschinek, G, Kroll, J, Krtička, M, Langer, C, Lederer, C, Leeb, H, Losito, R, Manousos, A, Marganiec, J, Massimi, C, Martínez, T, Mastinu, PF, Mastromarco, M, Meaze, M, Mengon, A, Mendoza, E, Milazzo, PM, Mingrone, T, Mirea, M, Mondelaers, W, Pavlik, A, Perkowski, J, Pignatari, M, Plompen, A, Praena, J, Quesada, JM, Rauscher, T, Reifhart, R, Riego, A, Roman, F, Rubbia, C, Sarmento, R, Schillebeeckx, P, Schmidt, S, Schumann, D, Taín, JL, Tagliente, G, Tsinganis, A, Valenta, S, Vannini, G, Variale, V, Vaz, P, Ventura, A, Versaci, R, Vermeulen, MJ, Vlachoudis, V, Vlastou, V, Wallner, A, Ware, T, Weigand, M, Weiß, C, Wright, T & Zç, G 2013, Angular distribution in the neutron-induced fission of actinides. in Fission 2013 - 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy., 08003, EPJ Web of Conferences, vol. 62, 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy, Fission 2013, Caen, France, 28/05/13. https://doi.org/10.1051/epjconf/20136208003

TY - GEN

T1 - Angular distribution in the neutron-induced fission of actinides

AU - Leong, L. S.

AU - Tassan-Got, L.

AU - Tarrio, D.

AU - Audouin, L.

AU - Paradela, C.

AU - Duran, I.

AU - Le Naour, C.

AU - Altstadt, S.

AU - Andrzejewsky, J.

AU - Barbagallo, M.

AU - Bécares, V.

AU - Bečvář, F.

AU - Belloni, F.

AU - Berthoumieux, E.

AU - Billowes, J.

AU - Boccone, V.

AU - Bosnar, D.

AU - Brugger, M.

AU - Calvino, F.

AU - Calviani, M.

AU - Cano-Ott, D.

AU - Carrapiço, C.

AU - Cerutti, F.

AU - Chiaveri, E.

AU - Chin, M.

AU - Colonna, N.

AU - Cortés, G.

AU - Cortés-Giraldo, M. A.

AU - Diakaki, M.

AU - Domingo-Pardo, C.

AU - Dressler, R.

AU - Dzysiuk, N.

AU - Eleftheriadis, C.

AU - Ferrari, A.

AU - Fraval, K.

AU - Ganesan, S.

AU - García, A. R.

AU - Giubrone, G.

AU - Gómez-Hornillos, M. B.

AU - Gonçalves, I. F.

AU - González, Romero

AU - Griesmayer, E.

AU - Guerrero, C.

AU - Gunsing, F.

AU - Gurusamy, P.

AU - Jenkins, D. G.

AU - Jericha, E.

AU - Kadi, E.

AU - Käppeler, F.

AU - Karadimos, D.

AU - Kivel, N.

AU - Koehler, P.

AU - Kokkoris, M.

AU - Korschinek, G.

AU - Kroll, J.

AU - Krtička, M.

AU - Langer, C.

AU - Lederer, C.

AU - Leeb, H.

AU - Losito, R.

AU - Manousos, A.

AU - Marganiec, J.

AU - Massimi, C.

AU - Martínez, T.

AU - Mastinu, P. F.

AU - Mastromarco, M.

AU - Meaze, M.

AU - Mengon, A.

AU - Mendoza, E.

AU - Milazzo, P. M.

AU - Mingrone, T.

AU - Mirea, M.

AU - Mondelaers, W.

AU - Pavlik, A.

AU - Perkowski, J.

AU - Pignatari, M.

AU - Plompen, A.

AU - Praena, J.

AU - Quesada, J. M.

AU - Rauscher, T.

AU - Reifhart, R.

AU - Riego, A.

AU - Roman, F.

AU - Rubbia, C.

AU - Sarmento, R.

AU - Schillebeeckx, P.

AU - Schmidt, S.

AU - Schumann, D.

AU - Taín, J. L.

AU - Tagliente, G.

AU - Tsinganis, A.

AU - Valenta, S.

AU - Vannini, G.

AU - Variale, V.

AU - Vaz, P.

AU - Ventura, A.

AU - Versaci, R.

AU - Vermeulen, M. J.

AU - Vlachoudis, V.

AU - Vlastou, V.

AU - Wallner, A.

AU - Ware, T.

AU - Weigand, M.

AU - Weiß, C.

AU - Wright, T.

AU - Zç, Gec

PY - 2013

Y1 - 2013

N2 - Above 1 MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the fissioning nucleus. This effect has to be taken into account for the efficiency estimation of devices used for fission cross section measurements. In addition it bears information on the spin deposition mechanism and on the structure of transitional states. We designed and constructed a detection device, based on Parallel Plate Avalanche Counters (PPAC), for measuring the fission fragment angular distributions of several isotopes, in particular 232Th. The measurement has been performed at n-TOF at CERN taking advantage of the very broad energy spectrum of the neutron beam. Fission events were recognized by back to back detection in coincidence in two position-sensitive detectors surrounding the targets. The detection efficiency, depending mostly on the stopping of fission fragments in backings and electrodes, has been computed with a Geant4 simulation and validated by the comparison to the measured case of 235U below 3 keV where the emission is isotropic. In the case of 232Th, the result is in good agreement with previous data below 10 MeV, with a good reproduction of the structures associated to vibrational states and the opening of second chance fission. In the 14 MeV region our data are much more accurate than previous ones which are broadly scattered.

AB - Above 1 MeV of incident neutron energy the fission fragment angular distribution (FFAD) has generally a strong anisotropic behavior due to the combination of the incident orbital momentum and the intrinsic spin of the fissioning nucleus. This effect has to be taken into account for the efficiency estimation of devices used for fission cross section measurements. In addition it bears information on the spin deposition mechanism and on the structure of transitional states. We designed and constructed a detection device, based on Parallel Plate Avalanche Counters (PPAC), for measuring the fission fragment angular distributions of several isotopes, in particular 232Th. The measurement has been performed at n-TOF at CERN taking advantage of the very broad energy spectrum of the neutron beam. Fission events were recognized by back to back detection in coincidence in two position-sensitive detectors surrounding the targets. The detection efficiency, depending mostly on the stopping of fission fragments in backings and electrodes, has been computed with a Geant4 simulation and validated by the comparison to the measured case of 235U below 3 keV where the emission is isotropic. In the case of 232Th, the result is in good agreement with previous data below 10 MeV, with a good reproduction of the structures associated to vibrational states and the opening of second chance fission. In the 14 MeV region our data are much more accurate than previous ones which are broadly scattered.

UR - http://www.scopus.com/inward/record.url?scp=84893292677&partnerID=8YFLogxK

U2 - 10.1051/epjconf/20136208003

DO - 10.1051/epjconf/20136208003

M3 - Conference contribution

SN - 9782759811236

T3 - EPJ Web of Conferences

BT - Fission 2013 - 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy

T2 - 5th International Workshop on Nuclear Fission and Fission Product Spectroscopy, Fission 2013

Y2 - 28 May 2013 through 31 May 2013

ER -

Angular distribution in the neutron-induced fission of actinides

Abstract

Publication series

Conference

Access to Document

Other files and links

Fingerprint

Cite this