Angular momentum population in the fragmentation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow/><mml:mrow><mml:mn>208</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">Pb</mml:mi></mml:math>at 1 GeV/nucleon
M. PfütznerInstitute of Experimental Physics, Warsaw University, PL-00681 Warsaw, PolandP. H. ReganDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomP. M. WalkerDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomM. CaamañoDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomJ. GerlGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyM. HellströmDivision of Cosmic and Subatomic Physics, Lund University, SE-22100, SwedenP. MayetGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyK.‐H. SchmidtGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyZs. PodolyákDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomM. N. MinevaDivision of Cosmic and Subatomic Physics, Lund University, SE-22100, SwedenA. AprahamianDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomJ. BenlliureDepartamento Física de Partículas, University of Santiago de Compostela, SpainA. M. BruceSchool of Engineering, University of Brighton, Brighton BN2 4GJ, United KingdomP. A. ButlerOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 3BX, United KingdomD. Cortina‐GilGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyD. M. CullenOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 3BX, United KingdomJ. DöringGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyT EnquistGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyC. FoxOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 3BX, United KingdomJ. Garcés NarroDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomH. GeisselGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyW. GelletlyDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomJ. GiovinazzoCEN Bordeaux-Gradignan/CNRS, F-33175 Gradignan Cedex, FranceM. GórskaGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyH. GraweGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyR. GrzywaczDepartment of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996A. KleinböhlGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyW. KortenCEA Saclay, DSM/DAPNIA/SPhN, F-91191 Gif-sur-Yvette Cedex, FranceM. LewitowiczGANIL, BP 5027, F-14021 Caen Cedex, FranceR. LucasCEA Saclay, DSM/DAPNIA/SPhN, F-91191 Gif-sur-Yvette Cedex, FranceH. MachDepartment of Radiation Sciences, Uppsala University, S-61182 Nyköping, SwedenC. D. O’LearyOliver Lodge Laboratory, Department of Physics, University of Liverpool, Liverpool L69 3BX, United KingdomF. de Oliveira SantosGANIL, BP 5027, F-14021 Caen Cedex, FranceC. J. PearsonDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomF. RejmundIPN, F-91406 Orsay Cedex, FranceM. RejmundIPN, F-91406 Orsay Cedex, FranceM. SawickaInstitute of Experimental Physics, Warsaw University, PL-00681 Warsaw, PolandH. SchaffnerGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyC. SchlegelGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyCh. TheisenCEA Paris-SaclayF. VivèsGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyD. D. WarnerCLRC Daresbury Laboratory, Warrington WA4 4AD, United KingdomC. WheldonDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomH. J. WollersheimGSI, Planckstrasse 1, D-64291 Darmstadt, GermanyS. C. WoodingDepartment of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
2002lv
ABI
Аннотация
A systematic study of the population probabilities of microsecond isomers produced following the fragmentation of ${}^{208}\mathrm{Pb}$ projectiles at 1 GeV/nucleon has been undertaken at the SIS/FRS facility at GSI Darmstadt. Gamma decays from approximately 20 isomeric states, mainly in the rare-earth and transitional nuclei with $A\ensuremath{\sim}180,$ were identified and the corresponding isomeric ratios deduced. 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). The model is found to represent an upper limit for the population of isomeric states in relativistic projectile fragmentation.
Перевод пока недоступен
Идентификаторы
Цитирования и источники
Цитирований: 2Использованных источников: 0