A large area detector for high-energy neutrons

Blaich, Th.; Elze, Th. W.; Emling, H.; Freiesleben, H.; Grimm, K.; Henning, W.; Holzmann, R.; Ickert, G.; Keller, J. G.; Klingler, H.; Kneissl, W.; König, R.; Kulessa, R.; Kratz, Jens Volker; Lambrecht, Daniel S.; Lange, J.; Leifels, Y.; Lubkiewicz, E.; Proft, M.; Prokopowicz, W.; Schütter, C.; Schmidt, R.; Spies, Hans-Friedrich; Stelzer, K.; Stroth, J.; Waluś, W.; Wajda, E.; Wollersheim, H. J.; Zinser, M.; Zude, E.

doi:10.1016/0168-9002(92)90507-z

Cited by 169 publications

(103 citation statements)

References 8 publications

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“…Thus, the evolution of nuclear structure in this region leaves important footprints for a deeper understanding of the nucleon-nucleon interaction in neutron-rich nuclei. In this respect, 35 Al would be an interesting nucleus to explore. In 1979 Simons et al [13] first identified the neutron-rich nucleus 35 Al produced in fragmentation of 40 Ar.…”

Section: Introductionmentioning

confidence: 99%

“…The measured inclusive differential CD cross section for 35 Al, integrated up to 5.0 MeV relative energy between the 34 Al core and the neutron using a Pb target, is 78(13) mb. The exclusive measured CD cross section that populates various excited states of 34 Al is 29(7) mb.…”

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confidence: 99%

“…The differential CD cross section of 35 Al → 34 Al + n has been interpreted in the light of a direct breakup model, and it suggests that the possible ground-state spin and parity of 35 Al could be, tentatively, 1/2 + or 3/2 + or 5/2 + . The valence neutrons, in the ground state of 35 Al, may occupy a combination of either l = 3,0 or l = 1,2 orbitals coupled with the 34 Al core in the ground and isomeric state(s), respectively. This hints of a particle-hole configuration of the neutron across the magic shell gaps at N = 20,28 which suggests narrowing the magic shell gap.…”

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confidence: 99%

“…This hints of a particle-hole configuration of the neutron across the magic shell gaps at N = 20,28 which suggests narrowing the magic shell gap. If the 5/2 + is the ground-state spin-parity of 35 Al as suggested in the literature, then the major ground-state configuration of 35 Al is a combination of 34 Al(g.s. ; 4 − ) ⊗ ν p 3/2 and 34 Al(isomer; 1 + ) ⊗ ν d 3/2 states.…”

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confidence: 99%

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confidence: 99%

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Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Chakraborty¹,

Pramanik²,

Aumann³

et al. 2017

Phys. Rev. C

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The ground-state configuration of 35 Al has been studied via Coulomb dissociation (CD) using the LAND-FRS setup (GSI, Darmstadt) at a relativistic energy of ∼403 MeV/nucleon. The measured inclusive differential CD cross section for 35 Al, integrated up to 5.0 MeV relative energy between the 34 Al core and the neutron using a Pb target, is 78(13) mb. The exclusive measured CD cross section that populates various excited states of 34 Al is 29(7) mb. The differential CD cross section of 35 Al → 34 Al + n has been interpreted in the light of a direct breakup model, and it suggests that the possible ground-state spin and parity of 35 Al could be, tentatively, 1/2 + or 3/2 + or 5/2 + . The valence neutrons, in the ground state of 35 Al, may occupy a combination of either l = 3,0 or l = 1,2 orbitals coupled with the 34 Al core in the ground and isomeric state(s), respectively. This hints of a particle-hole configuration of the neutron across the magic shell gaps at N = 20,28 which suggests narrowing the magic shell gap. If the 5/2 + is the ground-state spin-parity of 35 Al as suggested in the literature, then the major ground-state configuration of 35 Al is a combination of 34 Al(g.s.; 4 − ) ⊗ ν p 3/2 and 34 Al(isomer; 1 + ) ⊗ ν d 3/2 states. The result from this experiment has been compared with that from a previous knockout measurement and a calculation using the SDPF-M interaction.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Chakraborty¹,

Pramanik²,

Aumann³

et al. 2017

Phys. Rev. C

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Photodissociation of neutron deficient nuclei

Sonnabend¹,

Babilon²,

Hasper³

et al.

The 2nd International Conference on Nuclear Physics in Astrophysics

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Abstract. The knowledge of the cross sections for photodissociation reactions like e.g. (γ, n) of neutron deficient nuclei is of crucial interest for network calculations predicting the abundances of the so-called p nuclei. However, only single cross sections have been measured up to now, i.e., one has to rely nearly fully on theoretical predictions. While the cross sections of stable isotopes are accessible by experiments using real photons, the bulk of the involved reactions starts from unstable nuclei. Coulomb dissociation (CD) experiments in inverse kinematics might be a key to expand the experimental database for p-process network calculations. The approach to test the accuracy of the CD method is explained.PACS. 25.20.-x Photonuclear reactions -26.30.+k Nucleosynthesis in novae, supernovae and other explosive environments

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Energy Dependence of Collective Flow of Neutrons and Charged Particles in 197AU + 197AU Collisions

Blaich

Elze

Emling³

et al. 1994

NATO ASI Series

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the calculations to experimental data, and thus one can obtain intormation on the OCR Output action. The values ol its parameters will hopeIully be restricted by a comparison of compressional energy depends on the parameterixation ol the nuclcon nucleon inters into compressional energy In these calculations, the relation between density and that a substantial Iraction oI the kinetic energy in the entrance channel is converted clear matter is compressed to about two to three times the ground state density and 150 and 1050 MeV/u The comparison to microscopic calculations shows that nu the systems 9:*Nb + 93Nb and 197z\l1 + l97.\u in the projectile energy range between oi hydrodynamical calculations [1]. and experimental evidence was Iirst presented for at heavy ion accelerator laboratories. The phenomenon was predicted on the basis Collective Ilow of nuclear matter is one important aspect ol the research perlormed

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A large area detector for high-energy neutrons

Cited by 169 publications

References 8 publications

Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Ground-state configuration of neutron-rich Al35 via Coulomb breakup

Photodissociation of neutron deficient nuclei

Energy Dependence of Collective Flow of Neutrons and Charged Particles in 197AU + 197AU Collisions

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