Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon

KA Gladnishki; Z Podolyak; PH Regan; J Gerl; Margareta Hellström; Y Kopatch; S Mandal; M Gorska; RD Page; HJ Wollersheim; A Banu; G Benzoni; H Boardman; M La Commara; Jörgen Ekman; Claes Fahlander; H Geissel; H Grawe; E Kaza; A Korgul; M Matos; Milena Mineva; CJ Pearson; C Plettner; Dirk Rudolph; C Scheidenberger; KH Schmidt; V Shishkin; D Sohler; K Summerer; JJ Valiente-Dobon; PM Walker; H Weick; M Winkler; O Yordanov

doi:10.1103/PhysRevC.69.024617

Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon

KA Gladnishki, Z Podolyak, PH Regan, J Gerl, Margareta Hellström, Y Kopatch, S Mandal, M Gorska, RD Page, HJ Wollersheim, A Banu, G Benzoni, H Boardman, M La Commara, Jörgen Ekman, Claes Fahlander, H Geissel, H Grawe, E Kaza, A KorgulM Matos, Milena Mineva, CJ Pearson, C Plettner, Dirk Rudolph, C Scheidenberger, KH Schmidt, V Shishkin, D Sohler, K Summerer, JJ Valiente-Dobon, PM Walker, H Weick, M Winkler, O Yordanov

Dept of Physical Geography and Ecosystem Science

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Abstract

A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.

Original language	English
Article number	024617
Journal	Physical Review C (Nuclear Physics)
Volume	69
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.69.024617
Publication status	Published - 2004

Subject classification (UKÄ)

Subatomic Physics

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10.1103/PhysRevC.69.024617

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Gladnishki, KA., Podolyak, Z., Regan, PH., Gerl, J., Hellström, M., Kopatch, Y., Mandal, S., Gorska, M., Page, RD., Wollersheim, HJ., Banu, A., Benzoni, G., Boardman, H., La Commara, M., Ekman, J., Fahlander, C., Geissel, H., Grawe, H., Kaza, E., ... Yordanov, O. (2004). Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon. Physical Review C (Nuclear Physics), 69(2), Article 024617. https://doi.org/10.1103/PhysRevC.69.024617

@article{5610b6a309024cb39ff01fb20376dea5,

title = "Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon",

abstract = "A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.",

author = "KA Gladnishki and Z Podolyak and PH Regan and J Gerl and Margareta Hellstr{\"o}m and Y Kopatch and S Mandal and M Gorska and RD Page and HJ Wollersheim and A Banu and G Benzoni and H Boardman and {La Commara}, M and J{\"o}rgen Ekman and Claes Fahlander and H Geissel and H Grawe and E Kaza and A Korgul and M Matos and Milena Mineva and CJ Pearson and C Plettner and Dirk Rudolph and C Scheidenberger and KH Schmidt and V Shishkin and D Sohler and K Summerer and JJ Valiente-Dobon and PM Walker and H Weick and M Winkler and O Yordanov",

year = "2004",

doi = "10.1103/PhysRevC.69.024617",

language = "English",

volume = "69",

journal = "Physical Review C (Nuclear Physics)",

issn = "0556-2813",

publisher = "American Physical Society",

number = "2",

}

Gladnishki, KA, Podolyak, Z, Regan, PH, Gerl, J, Hellström, M, Kopatch, Y, Mandal, S, Gorska, M, Page, RD, Wollersheim, HJ, Banu, A, Benzoni, G, Boardman, H, La Commara, M, Ekman, J, Fahlander, C, Geissel, H, Grawe, H, Kaza, E, Korgul, A, Matos, M, Mineva, M, Pearson, CJ, Plettner, C, Rudolph, D, Scheidenberger, C, Schmidt, KH, Shishkin, V, Sohler, D, Summerer, K, Valiente-Dobon, JJ, Walker, PM, Weick, H, Winkler, M & Yordanov, O 2004, 'Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon', Physical Review C (Nuclear Physics), vol. 69, no. 2, 024617. https://doi.org/10.1103/PhysRevC.69.024617

TY - JOUR

T1 - Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon

AU - Gladnishki, KA

AU - Podolyak, Z

AU - Regan, PH

AU - Gerl, J

AU - Hellström, Margareta

AU - Kopatch, Y

AU - Mandal, S

AU - Gorska, M

AU - Page, RD

AU - Wollersheim, HJ

AU - Banu, A

AU - Benzoni, G

AU - Boardman, H

AU - La Commara, M

AU - Ekman, Jörgen

AU - Fahlander, Claes

AU - Geissel, H

AU - Grawe, H

AU - Kaza, E

AU - Korgul, A

AU - Matos, M

AU - Mineva, Milena

AU - Pearson, CJ

AU - Plettner, C

AU - Rudolph, Dirk

AU - Scheidenberger, C

AU - Schmidt, KH

AU - Shishkin, V

AU - Sohler, D

AU - Summerer, K

AU - Valiente-Dobon, JJ

AU - Walker, PM

AU - Weick, H

AU - Winkler, M

AU - Yordanov, O

PY - 2004

Y1 - 2004

N2 - A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.

AB - A systematic study of the population probabilities of nanosecond and microsecond isomers produced following the projectile fragmentation of U-238 at 750 MeV/nucleon has been undertaken at the SIS/FRS facility at GSI. Approximately 15 isomeric states in neutron-deficient nuclei around A similar to 190 were identified and the corresponding. isomeric ratios determined. The results are compared with a model based on the statistical abrasion-ablation description of relativistic fragmentation and simple assumptions concerning gamma cascades in the final nucleus (sharp cutoff). This model represents an upper limit for the population of isomeric states in relativistic projectile fragmentation. When the decay properties of the states above the isomer are taken into account, as opposed to the sharp cutoff approximation, a good agreement between the experimental and calculated angular momentum population is obtained.

U2 - 10.1103/PhysRevC.69.024617

DO - 10.1103/PhysRevC.69.024617

M3 - Article

SN - 0556-2813

VL - 69

JO - Physical Review C (Nuclear Physics)

JF - Physical Review C (Nuclear Physics)

IS - 2

M1 - 024617

ER -

Angular Momentum Population in the Projectile Fragmentation of 238U at 750 MeV/nucleon

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