Shape dynamics in neutron-rich Kr isotopes: Coulomb excitation of Kr-92, Kr-94 and Kr-96

M. Albers; K. Nomura; N. Warr; A. Blazhev; J. Jolie; D. Muecher; B. Bastin; C. Bauer; C. Bernards; L. Bettermann; V. Bildstein; J. Butterworth; M. Cappellazzo; J. Cederkaell; D. Cline; I. Darby; S. Das Gupta; J.M. Daugas; T. Davinson; H. De Witte; J. Diriken; D. Filipescu; E. Fiori; C. Fransen; L.P. Gaffney; G. Georgiev; R. Gernhaeuser; M. Hackstein; S. Heinze; H. Hess; M. Huyse; D. Jenkins; J. Konki; M. Kowalczyk; T. Kroell; R. Kruecken; J. Litzinger; R. Lutter; N. Marginean; C. Mihai; K. Moschner; P. Napiorkowski; B.S. Nara Singh; K. Nowak; J. Pakarinen; M. Pfeiffer; D. Radeck; P. Reiter; S. Rigby; L.M. Robledo; R. Rodriguez-Guzman; M. Rudigier; M. Scheck; M. Seidlitz; B. Siebeck; G.S. Simpson; P. Thoele; T. Thomas; J. Van de Walle; P. Van Duppen; M. Vermeulen; D. Voulot; R. Wadsworth; F. Wenander; K. Wimmer; K.O. Zell; M. Zielinska

doi:10.1016/j.nuclphysa.2013.01.013

Shape dynamics in neutron-rich Kr isotopes: Coulomb excitation of Kr-92, Kr-94 and Kr-96

M. Albers, K. Nomura, N. Warr, A. Blazhev, J. Jolie, D. Muecher, B. Bastin, C. Bauer, C. Bernards, L. Bettermann, V. Bildstein, J. Butterworth, M. Cappellazzo, J. Cederkaell, D. Cline, I. Darby, S. Das Gupta, J.M. Daugas, T. Davinson, H. De WitteJ. Diriken, D. Filipescu, E. Fiori, C. Fransen, L.P. Gaffney, G. Georgiev, R. Gernhaeuser, M. Hackstein, S. Heinze, H. Hess, M. Huyse, D. Jenkins, J. Konki, M. Kowalczyk, T. Kroell, R. Kruecken, J. Litzinger, R. Lutter, N. Marginean, C. Mihai, K. Moschner, P. Napiorkowski, B.S. Nara Singh, K. Nowak, J. Pakarinen, M. Pfeiffer, D. Radeck, P. Reiter, S. Rigby, L.M. Robledo, R. Rodriguez-Guzman, M. Rudigier, M. Scheck, M. Seidlitz, B. Siebeck, G.S. Simpson, P. Thoele, T. Thomas, J. Van de Walle, P. Van Duppen, M. Vermeulen, D. Voulot, R. Wadsworth, F. Wenander, K. Wimmer, K.O. Zell, M. Zielinska

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Abstract

We report on the study of excited states in 92,94,96Kr populated via projectile Coulomb excitation at safe energies. The radioactive ion beams at energies of 2.85 MeV/u were delivered by the REX-ISOLDE facility at CERN and impinged on self-supporting 194,196Pt targets. The emitted γ-rays were detected by the Miniball detector-array. A detailed description of the experimental techniques used for extracting diagonal and transitional matrix elements and of the theoretical framework is given. The present experiment reveals the moderate evolution of the collective structure in the considered neutron-rich Kr isotopic chain, which is supported by the interacting boson model combined with the self-consistent mean-field method using a microscopic Gogny energy-density functional. The theory also suggests possible shape coexistence in the exotic nucleus 96Kr.

Original language	English
Pages (from-to)	1-28
Number of pages	28
Journal	Nuclear Physics A
Volume	899
DOIs	https://doi.org/10.1016/j.nuclphysa.2013.01.013
Publication status	Published - 1 Feb 2013

Keywords

Nuclear reactions194,196Pt(92Kr, 92Kr′)(94Kr, 94Kr′)(96Kr, 96Kr′)
E = 2.85MeV/nucleon
measured, projectile and target E
I(θ,t) using DSSD
Iγ(θ) from Coulomb excitation using HPGe array and considering Doppler correction
(particle)γ-coin
calculated, electromagnetic matrix elements
γ-ray yields using CC code GOSIA2
energy vs. deformation using IBM-2 with self-consistent constrained HFB with Gogny functional
deduced, Coulomb excitation σ
electromagnetic matrix elements using fit to data
B(E2),
quadrupole moments
IBM-2 Hamiltonian parameters
+96Kr calculated levels
J
π
deduced, shape coexistence
Eγ

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10.1016/j.nuclphysa.2013.01.013

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Albers, M., Nomura, K., Warr, N., Blazhev, A., Jolie, J., Muecher, D., Bastin, B., Bauer, C., Bernards, C., Bettermann, L., Bildstein, V., Butterworth, J., Cappellazzo, M., Cederkaell, J., Cline, D., Darby, I., Das Gupta, S., Daugas, J. M., Davinson, T., ... Zielinska, M. (2013). Shape dynamics in neutron-rich Kr isotopes: Coulomb excitation of Kr-92, Kr-94 and Kr-96. Nuclear Physics A, 899, 1-28. https://doi.org/10.1016/j.nuclphysa.2013.01.013

@article{b80c9bc943ae47299e2c2e89d01e7b76,

title = "Shape dynamics in neutron-rich Kr isotopes: Coulomb excitation of Kr-92, Kr-94 and Kr-96",

abstract = "We report on the study of excited states in 92,94,96Kr populated via projectile Coulomb excitation at safe energies. The radioactive ion beams at energies of 2.85 MeV/u were delivered by the REX-ISOLDE facility at CERN and impinged on self-supporting 194,196Pt targets. The emitted γ-rays were detected by the Miniball detector-array. A detailed description of the experimental techniques used for extracting diagonal and transitional matrix elements and of the theoretical framework is given. The present experiment reveals the moderate evolution of the collective structure in the considered neutron-rich Kr isotopic chain, which is supported by the interacting boson model combined with the self-consistent mean-field method using a microscopic Gogny energy-density functional. The theory also suggests possible shape coexistence in the exotic nucleus 96Kr.",

keywords = "Nuclear reactions194,196Pt(92Kr, 92Kr′)(94Kr, 94Kr′)(96Kr, 96Kr′), E = 2.85MeV/nucleon, measured, projectile and target E, I(θ,t) using DSSD, Iγ(θ) from Coulomb excitation using HPGe array and considering Doppler correction, (particle)γ-coin, calculated, electromagnetic matrix elements, γ-ray yields using CC code GOSIA2, energy vs. deformation using IBM-2 with self-consistent constrained HFB with Gogny functional, deduced, Coulomb excitation σ, electromagnetic matrix elements using fit to data, B(E2),, quadrupole moments, IBM-2 Hamiltonian parameters, +96Kr calculated levels, J, π, deduced, shape coexistence, Eγ",

author = "M. Albers and K. Nomura and N. Warr and A. Blazhev and J. Jolie and D. Muecher and B. Bastin and C. Bauer and C. Bernards and L. Bettermann and V. Bildstein and J. Butterworth and M. Cappellazzo and J. Cederkaell and D. Cline and I. Darby and {Das Gupta}, S. and J.M. Daugas and T. Davinson and {De Witte}, H. and J. Diriken and D. Filipescu and E. Fiori and C. Fransen and L.P. Gaffney and G. Georgiev and R. Gernhaeuser and M. Hackstein and S. Heinze and H. Hess and M. Huyse and D. Jenkins and J. Konki and M. Kowalczyk and T. Kroell and R. Kruecken and J. Litzinger and R. Lutter and N. Marginean and C. Mihai and K. Moschner and P. Napiorkowski and {Nara Singh}, B.S. and K. Nowak and J. Pakarinen and M. Pfeiffer and D. Radeck and P. Reiter and S. Rigby and L.M. Robledo and R. Rodriguez-Guzman and M. Rudigier and M. Scheck and M. Seidlitz and B. Siebeck and G.S. Simpson and P. Thoele and T. Thomas and {de Walle}, {J. Van} and {Van Duppen}, P. and M. Vermeulen and D. Voulot and R. Wadsworth and F. Wenander and K. Wimmer and K.O. Zell and M. Zielinska",

year = "2013",

month = feb,

day = "1",

doi = "10.1016/j.nuclphysa.2013.01.013",

language = "English",

volume = "899",

pages = "1--28",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

}

Albers, M, Nomura, K, Warr, N, Blazhev, A, Jolie, J, Muecher, D, Bastin, B, Bauer, C, Bernards, C, Bettermann, L, Bildstein, V, Butterworth, J, Cappellazzo, M, Cederkaell, J, Cline, D, Darby, I, Das Gupta, S, Daugas, JM, Davinson, T, De Witte, H, Diriken, J, Filipescu, D, Fiori, E, Fransen, C, Gaffney, LP, Georgiev, G, Gernhaeuser, R, Hackstein, M, Heinze, S, Hess, H, Huyse, M, Jenkins, D, Konki, J, Kowalczyk, M, Kroell, T, Kruecken, R, Litzinger, J, Lutter, R, Marginean, N, Mihai, C, Moschner, K, Napiorkowski, P, Nara Singh, BS, Nowak, K, Pakarinen, J, Pfeiffer, M, Radeck, D, Reiter, P, Rigby, S, Robledo, LM, Rodriguez-Guzman, R, Rudigier, M, Scheck, M, Seidlitz, M, Siebeck, B, Simpson, GS, Thoele, P, Thomas, T, de Walle, JV, Van Duppen, P, Vermeulen, M, Voulot, D, Wadsworth, R, Wenander, F, Wimmer, K, Zell, KO & Zielinska, M 2013, 'Shape dynamics in neutron-rich Kr isotopes: Coulomb excitation of Kr-92, Kr-94 and Kr-96', Nuclear Physics A, vol. 899, pp. 1-28. https://doi.org/10.1016/j.nuclphysa.2013.01.013

TY - JOUR

T1 - Shape dynamics in neutron-rich Kr isotopes

T2 - Coulomb excitation of Kr-92, Kr-94 and Kr-96

AU - Albers, M.

AU - Nomura, K.

AU - Warr, N.

AU - Blazhev, A.

AU - Jolie, J.

AU - Muecher, D.

AU - Bastin, B.

AU - Bauer, C.

AU - Bernards, C.

AU - Bettermann, L.

AU - Bildstein, V.

AU - Butterworth, J.

AU - Cappellazzo, M.

AU - Cederkaell, J.

AU - Cline, D.

AU - Darby, I.

AU - Das Gupta, S.

AU - Daugas, J.M.

AU - Davinson, T.

AU - De Witte, H.

AU - Diriken, J.

AU - Filipescu, D.

AU - Fiori, E.

AU - Fransen, C.

AU - Gaffney, L.P.

AU - Georgiev, G.

AU - Gernhaeuser, R.

AU - Hackstein, M.

AU - Heinze, S.

AU - Hess, H.

AU - Huyse, M.

AU - Jenkins, D.

AU - Konki, J.

AU - Kowalczyk, M.

AU - Kroell, T.

AU - Kruecken, R.

AU - Litzinger, J.

AU - Lutter, R.

AU - Marginean, N.

AU - Mihai, C.

AU - Moschner, K.

AU - Napiorkowski, P.

AU - Nara Singh, B.S.

AU - Nowak, K.

AU - Pakarinen, J.

AU - Pfeiffer, M.

AU - Radeck, D.

AU - Reiter, P.

AU - Rigby, S.

AU - Robledo, L.M.

AU - Rodriguez-Guzman, R.

AU - Rudigier, M.

AU - Scheck, M.

AU - Seidlitz, M.

AU - Siebeck, B.

AU - Simpson, G.S.

AU - Thoele, P.

AU - Thomas, T.

AU - de Walle, J. Van

AU - Van Duppen, P.

AU - Vermeulen, M.

AU - Voulot, D.

AU - Wadsworth, R.

AU - Wenander, F.

AU - Wimmer, K.

AU - Zell, K.O.

AU - Zielinska, M.

PY - 2013/2/1

Y1 - 2013/2/1

N2 - We report on the study of excited states in 92,94,96Kr populated via projectile Coulomb excitation at safe energies. The radioactive ion beams at energies of 2.85 MeV/u were delivered by the REX-ISOLDE facility at CERN and impinged on self-supporting 194,196Pt targets. The emitted γ-rays were detected by the Miniball detector-array. A detailed description of the experimental techniques used for extracting diagonal and transitional matrix elements and of the theoretical framework is given. The present experiment reveals the moderate evolution of the collective structure in the considered neutron-rich Kr isotopic chain, which is supported by the interacting boson model combined with the self-consistent mean-field method using a microscopic Gogny energy-density functional. The theory also suggests possible shape coexistence in the exotic nucleus 96Kr.

AB - We report on the study of excited states in 92,94,96Kr populated via projectile Coulomb excitation at safe energies. The radioactive ion beams at energies of 2.85 MeV/u were delivered by the REX-ISOLDE facility at CERN and impinged on self-supporting 194,196Pt targets. The emitted γ-rays were detected by the Miniball detector-array. A detailed description of the experimental techniques used for extracting diagonal and transitional matrix elements and of the theoretical framework is given. The present experiment reveals the moderate evolution of the collective structure in the considered neutron-rich Kr isotopic chain, which is supported by the interacting boson model combined with the self-consistent mean-field method using a microscopic Gogny energy-density functional. The theory also suggests possible shape coexistence in the exotic nucleus 96Kr.

KW - Nuclear reactions194,196Pt(92Kr, 92Kr′)(94Kr, 94Kr′)(96Kr, 96Kr′)

KW - E = 2.85MeV/nucleon

KW - measured, projectile and target E

KW - I(θ,t) using DSSD

KW - Iγ(θ) from Coulomb excitation using HPGe array and considering Doppler correction

KW - (particle)γ-coin

KW - calculated, electromagnetic matrix elements

KW - γ-ray yields using CC code GOSIA2

KW - energy vs. deformation using IBM-2 with self-consistent constrained HFB with Gogny functional

KW - deduced, Coulomb excitation σ

KW - electromagnetic matrix elements using fit to data

KW - B(E2),

KW - quadrupole moments

KW - IBM-2 Hamiltonian parameters

KW - +96Kr calculated levels

KW - J

KW - π

KW - deduced, shape coexistence

KW - Eγ

U2 - 10.1016/j.nuclphysa.2013.01.013

DO - 10.1016/j.nuclphysa.2013.01.013

M3 - Article

SN - 0375-9474

VL - 899

SP - 1

EP - 28

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -

Shape dynamics in neutron-rich Kr isotopes: Coulomb excitation of Kr-92, Kr-94 and Kr-96

Abstract

Keywords

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