Shape evolution in even-mass 98 - 104 Zr isotopes via lifetime measurements using the γγ -coincidence technique

G. Pasqualato; S. Ansari; J. S. Heines; V. Modamio; A. Görgen; W. Korten; J. Ljungvall; E. Clément; J. Dudouet; A. Lemasson; T. R. Rodríguez; J. M. Allmond; T. Arici; K. S. Beckmann; A. M. Bruce; D. Doherty; A. Esmaylzadeh; E. R. Gamba; L. Gerhard; J. Gerl; G. Georgiev; D. P. Ivanova; J. Jolie; Y. H. Kim; L. Knafla; A. Korichi; P. Koseoglou; M. Labiche; S. Lalkovski; T. Lauritsen; H. J. Li; L. G. Pedersen; S. Pietri; D. Ralet; J. M. Regis; M. Rudigier; S. Saha; E. Sahin; S. Siem; P. Singh; P. A. Söderström; C. Theisen; T. Tornyi; M. Vandebrouck; W. Witt; M. Zielińska; D. Barrientos; P. Bednarczyk; G. Benzoni; A. J. Boston; H. C. Boston; A. Bracco; B. Cederwall; M. Ciemała; G. de France; C. Domingo-Pardo; J. Eberth; A. Gadea; V. González; A. Gottardo; L. J. Harkness-Brennan; H. Hess; D. S. Judson; A. Jungclaus; S. M. Lenzi; S. Leoni; R. Menegazzo; D. Mengoni; C. Michelagnoli; D. R. Napoli; J. Nyberg; Zs Podolyák; A. Pullia; F. Recchia; P. Reiter; K. Rezynkina; M. D. Salsac; E. Sanchis; M. Şenyiğit; M. Siciliano; J. Simpson; D. Sohler; O. Stezowski; J. J. Valiente-Dobón; D. Verney

doi:10.1140/epja/s10050-023-01172-8

Shape evolution in even-mass ^{98 - 104} Zr isotopes via lifetime measurements using the γγ -coincidence technique

G. Pasqualato
, S. Ansari
, J. S. Heines
, V. Modamio
, A. Görgen
, W. Korten
, J. Ljungvall
, E. Clément
, J. Dudouet
, A. Lemasson
, T. R. Rodríguez
, J. M. Allmond
, T. Arici
, K. S. Beckmann
, A. M. Bruce
, D. Doherty
, A. Esmaylzadeh
, E. R. Gamba
, L. Gerhard
, J. Gerl

G. Georgiev, D. P. Ivanova, J. Jolie, Y. H. Kim, L. Knafla, A. Korichi, P. Koseoglou, M. Labiche, S. Lalkovski, T. Lauritsen, H. J. Li, L. G. Pedersen, S. Pietri, D. Ralet, J. M. Regis, M. Rudigier, S. Saha, E. Sahin, S. Siem, P. Singh, P. A. Söderström, C. Theisen, T. Tornyi, M. Vandebrouck, W. Witt, M. Zielińska, D. Barrientos, P. Bednarczyk, G. Benzoni, A. J. Boston, H. C. Boston, A. Bracco, B. Cederwall, M. Ciemała, G. de France, C. Domingo-Pardo, J. Eberth, A. Gadea, V. González, A. Gottardo, L. J. Harkness-Brennan, H. Hess, D. S. Judson, A. Jungclaus, S. M. Lenzi, S. Leoni, R. Menegazzo, D. Mengoni, C. Michelagnoli, D. R. Napoli, J. Nyberg, Zs Podolyák, A. Pullia, F. Recchia, P. Reiter, K. Rezynkina, M. D. Salsac, E. Sanchis, M. Şenyiğit, M. Siciliano, J. Simpson, D. Sohler, O. Stezowski, J. J. Valiente-Dobón, D. Verney

Nuclear Structure and Nuclear Astrophysi

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first 2 ⁺ state and the increase in the transition strength B(E2; 21+→01+) going from ⁹⁸ Zr to ¹⁰⁰ Zr has been the first example of “quantum phase transition” in nuclear shapes, which has few equivalents in the nuclear chart. Although a multitude of experiments have been performed to measure nuclear properties related to nuclear shapes and collectivity in the region, none of the measured lifetimes were obtained using the Recoil Distance Doppler Shift method in the γγ -coincidence mode where a gate on the direct feeding transition of the state of interest allows a strict control of systematical errors. This work reports the results of lifetime measurements for the first yrast excited states in ^{98 - 104} Zr carried out to extract reduced transition probabilities. The new lifetime values in γγ -coincidence and γ -single mode are compared with the results of former experiments. Recent predictions of the Interacting Boson Model with Configuration Mixing, the Symmetry Conserving Configuration Mixing model based on the Hartree–Fock–Bogoliubov approach and the Monte Carlo Shell Model are presented and compared with the experimental data.

Original language	English
Article number	276
Journal	European Physical Journal A
Volume	59
Issue number	11
DOIs	https://doi.org/10.1140/epja/s10050-023-01172-8
State	Published - Nov 2023

Funding

The authors would like to thank the AGATA and VAMOS++ collaborations. We are grateful for the help from J. Goupil and the GANIL technical staff for their work in setting up the apparatuses and the good quality beam. The authors would also like to thank G. Fremont for preparing the target and degrader foils. G.P. and S.A. acknowledge M. Siciliano for the fruitful discussions and the help with lifetime analysis. This work has been partly funded (G.P.) by the P2IO LabEx (ANR-10-LABX-0038) in the framework Investissements d’Avenir (ANR-11-IDEX-0003-01) managed by the French Agence Nationale de la Recherche (ANR). The work of T.R.R. is supported by the Spanish MICINN under PRE2019-088036. T.R.R. gratefully thanks the support from the GSI-Darmstadt computing facility. A.G, J.S.H., V.M and L.G.P acknowledge the support of Norwegian Research Council, projects 240104, 263030, and 325714. Z.P gratefully thanks the support of STFC (UK). The work of P.-A.S. is supported by BMBF under grant NuSTAR.DA 05P15RDFN1, contract PN 23.21.01.06 sponsored by the Romanian Ministry of Research, Innovation and Digitalization. A.E, L.G., J.J., L.K. and J.-M.R. acknowledge the BMBF Verbundprojekt 05P2021 (ErUM-FSP T07) grant No. 05P21PKFN1. S.L. acknowledges funding from the European Union-NextGenerationEU, through the National Recovery and Resilience Plan of the Republic of Bulgaria, project No. BG-RRP-2.004-0008-C01. The work of A.M.B. and E.R.G. was financially supported by the Science and Technology Facility Council (STFC) Grant No. ST/L005840/1. M.S. has been supported by the OASIS project no. ANR-17-CE31-0026 and by he U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract number DE-AC02-06CH11357.

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10.1140/epja/s10050-023-01172-8

Cite this

Pasqualato, G., Ansari, S., Heines, J. S., Modamio, V., Görgen, A., Korten, W., Ljungvall, J., Clément, E., Dudouet, J., Lemasson, A., Rodríguez, T. R., Allmond, J. M., Arici, T., Beckmann, K. S., Bruce, A. M., Doherty, D., Esmaylzadeh, A., Gamba, E. R., Gerhard, L., ... Verney, D. (2023). Shape evolution in even-mass ^{98 - 104} Zr isotopes via lifetime measurements using the γγ -coincidence technique. European Physical Journal A, 59(11), Article 276. https://doi.org/10.1140/epja/s10050-023-01172-8

@article{88ff3d9c37794b6b9d3dc082fca661ea,

title = "Shape evolution in even-mass 98 - 104 Zr isotopes via lifetime measurements using the γγ -coincidence technique",

abstract = "The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first 2 + state and the increase in the transition strength B(E2; 21+→01+) going from 98 Zr to 100 Zr has been the first example of “quantum phase transition” in nuclear shapes, which has few equivalents in the nuclear chart. Although a multitude of experiments have been performed to measure nuclear properties related to nuclear shapes and collectivity in the region, none of the measured lifetimes were obtained using the Recoil Distance Doppler Shift method in the γγ -coincidence mode where a gate on the direct feeding transition of the state of interest allows a strict control of systematical errors. This work reports the results of lifetime measurements for the first yrast excited states in 98 - 104 Zr carried out to extract reduced transition probabilities. The new lifetime values in γγ -coincidence and γ -single mode are compared with the results of former experiments. Recent predictions of the Interacting Boson Model with Configuration Mixing, the Symmetry Conserving Configuration Mixing model based on the Hartree–Fock–Bogoliubov approach and the Monte Carlo Shell Model are presented and compared with the experimental data.",

author = "G. Pasqualato and S. Ansari and Heines, \{J. S.\} and V. Modamio and A. G{\"o}rgen and W. Korten and J. Ljungvall and E. Cl{\'e}ment and J. Dudouet and A. Lemasson and Rodr{\'i}guez, \{T. R.\} and Allmond, \{J. M.\} and T. Arici and Beckmann, \{K. S.\} and Bruce, \{A. M.\} and D. Doherty and A. Esmaylzadeh and Gamba, \{E. R.\} and L. Gerhard and J. Gerl and G. Georgiev and Ivanova, \{D. P.\} and J. Jolie and Kim, \{Y. H.\} and L. Knafla and A. Korichi and P. Koseoglou and M. Labiche and S. Lalkovski and T. Lauritsen and Li, \{H. J.\} and Pedersen, \{L. G.\} and S. Pietri and D. Ralet and Regis, \{J. M.\} and M. Rudigier and S. Saha and E. Sahin and S. Siem and P. Singh and S{\"o}derstr{\"o}m, \{P. A.\} and C. Theisen and T. Tornyi and M. Vandebrouck and W. Witt and M. Zieli{\'n}ska and D. Barrientos and P. Bednarczyk and G. Benzoni and Boston, \{A. J.\} and Boston, \{H. C.\} and A. Bracco and B. Cederwall and M. Ciema{\l}a and \{de France\}, G. and C. Domingo-Pardo and J. Eberth and A. Gadea and V. Gonz{\'a}lez and A. Gottardo and Harkness-Brennan, \{L. J.\} and H. Hess and Judson, \{D. S.\} and A. Jungclaus and Lenzi, \{S. M.\} and S. Leoni and R. Menegazzo and D. Mengoni and C. Michelagnoli and Napoli, \{D. R.\} and J. Nyberg and Zs Podoly{\'a}k and A. Pullia and F. Recchia and P. Reiter and K. Rezynkina and Salsac, \{M. D.\} and E. Sanchis and M. {\c S}enyiğit and M. Siciliano and J. Simpson and D. Sohler and O. Stezowski and Valiente-Dob{\'o}n, \{J. J.\} and D. Verney",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive licence to Societ{\`a} Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2023",

month = nov,

doi = "10.1140/epja/s10050-023-01172-8",

language = "English",

volume = "59",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "11",

}

Pasqualato, G, Ansari, S, Heines, JS, Modamio, V, Görgen, A, Korten, W, Ljungvall, J, Clément, E, Dudouet, J, Lemasson, A, Rodríguez, TR, Allmond, JM, Arici, T, Beckmann, KS, Bruce, AM, Doherty, D, Esmaylzadeh, A, Gamba, ER, Gerhard, L, Gerl, J, Georgiev, G, Ivanova, DP, Jolie, J, Kim, YH, Knafla, L, Korichi, A, Koseoglou, P, Labiche, M, Lalkovski, S, Lauritsen, T, Li, HJ, Pedersen, LG, Pietri, S, Ralet, D, Regis, JM, Rudigier, M, Saha, S, Sahin, E, Siem, S, Singh, P, Söderström, PA, Theisen, C, Tornyi, T, Vandebrouck, M, Witt, W, Zielińska, M, Barrientos, D, Bednarczyk, P, Benzoni, G, Boston, AJ, Boston, HC, Bracco, A, Cederwall, B, Ciemała, M, de France, G, Domingo-Pardo, C, Eberth, J, Gadea, A, González, V, Gottardo, A, Harkness-Brennan, LJ, Hess, H, Judson, DS, Jungclaus, A, Lenzi, SM, Leoni, S, Menegazzo, R, Mengoni, D, Michelagnoli, C, Napoli, DR, Nyberg, J, Podolyák, Z, Pullia, A, Recchia, F, Reiter, P, Rezynkina, K, Salsac, MD, Sanchis, E, Şenyiğit, M, Siciliano, M, Simpson, J, Sohler, D, Stezowski, O, Valiente-Dobón, JJ & Verney, D 2023, 'Shape evolution in even-mass ^{98 - 104} Zr isotopes via lifetime measurements using the γγ -coincidence technique', European Physical Journal A, vol. 59, no. 11, 276. https://doi.org/10.1140/epja/s10050-023-01172-8

TY - JOUR

T1 - Shape evolution in even-mass 98 - 104 Zr isotopes via lifetime measurements using the γγ -coincidence technique

AU - Pasqualato, G.

AU - Ansari, S.

AU - Heines, J. S.

AU - Modamio, V.

AU - Görgen, A.

AU - Korten, W.

AU - Ljungvall, J.

AU - Clément, E.

AU - Dudouet, J.

AU - Lemasson, A.

AU - Rodríguez, T. R.

AU - Allmond, J. M.

AU - Arici, T.

AU - Beckmann, K. S.

AU - Bruce, A. M.

AU - Doherty, D.

AU - Esmaylzadeh, A.

AU - Gamba, E. R.

AU - Gerhard, L.

AU - Gerl, J.

AU - Georgiev, G.

AU - Ivanova, D. P.

AU - Jolie, J.

AU - Kim, Y. H.

AU - Knafla, L.

AU - Korichi, A.

AU - Koseoglou, P.

AU - Labiche, M.

AU - Lalkovski, S.

AU - Lauritsen, T.

AU - Li, H. J.

AU - Pedersen, L. G.

AU - Pietri, S.

AU - Ralet, D.

AU - Regis, J. M.

AU - Rudigier, M.

AU - Saha, S.

AU - Sahin, E.

AU - Siem, S.

AU - Singh, P.

AU - Söderström, P. A.

AU - Theisen, C.

AU - Tornyi, T.

AU - Vandebrouck, M.

AU - Witt, W.

AU - Zielińska, M.

AU - Barrientos, D.

AU - Bednarczyk, P.

AU - Benzoni, G.

AU - Boston, A. J.

AU - Boston, H. C.

AU - Bracco, A.

AU - Cederwall, B.

AU - Ciemała, M.

AU - de France, G.

AU - Domingo-Pardo, C.

AU - Eberth, J.

AU - Gadea, A.

AU - González, V.

AU - Gottardo, A.

AU - Harkness-Brennan, L. J.

AU - Hess, H.

AU - Judson, D. S.

AU - Jungclaus, A.

AU - Lenzi, S. M.

AU - Leoni, S.

AU - Menegazzo, R.

AU - Mengoni, D.

AU - Michelagnoli, C.

AU - Napoli, D. R.

AU - Nyberg, J.

AU - Podolyák, Zs

AU - Pullia, A.

AU - Recchia, F.

AU - Reiter, P.

AU - Rezynkina, K.

AU - Salsac, M. D.

AU - Sanchis, E.

AU - Şenyiğit, M.

AU - Siciliano, M.

AU - Simpson, J.

AU - Sohler, D.

AU - Stezowski, O.

AU - Valiente-Dobón, J. J.

AU - Verney, D.

PY - 2023/11

Y1 - 2023/11

N2 - The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first 2 + state and the increase in the transition strength B(E2; 21+→01+) going from 98 Zr to 100 Zr has been the first example of “quantum phase transition” in nuclear shapes, which has few equivalents in the nuclear chart. Although a multitude of experiments have been performed to measure nuclear properties related to nuclear shapes and collectivity in the region, none of the measured lifetimes were obtained using the Recoil Distance Doppler Shift method in the γγ -coincidence mode where a gate on the direct feeding transition of the state of interest allows a strict control of systematical errors. This work reports the results of lifetime measurements for the first yrast excited states in 98 - 104 Zr carried out to extract reduced transition probabilities. The new lifetime values in γγ -coincidence and γ -single mode are compared with the results of former experiments. Recent predictions of the Interacting Boson Model with Configuration Mixing, the Symmetry Conserving Configuration Mixing model based on the Hartree–Fock–Bogoliubov approach and the Monte Carlo Shell Model are presented and compared with the experimental data.

AB - The Zirconium (Z = 40) isotopic chain has attracted interest for more than four decades. The abrupt lowering of the energy of the first 2 + state and the increase in the transition strength B(E2; 21+→01+) going from 98 Zr to 100 Zr has been the first example of “quantum phase transition” in nuclear shapes, which has few equivalents in the nuclear chart. Although a multitude of experiments have been performed to measure nuclear properties related to nuclear shapes and collectivity in the region, none of the measured lifetimes were obtained using the Recoil Distance Doppler Shift method in the γγ -coincidence mode where a gate on the direct feeding transition of the state of interest allows a strict control of systematical errors. This work reports the results of lifetime measurements for the first yrast excited states in 98 - 104 Zr carried out to extract reduced transition probabilities. The new lifetime values in γγ -coincidence and γ -single mode are compared with the results of former experiments. Recent predictions of the Interacting Boson Model with Configuration Mixing, the Symmetry Conserving Configuration Mixing model based on the Hartree–Fock–Bogoliubov approach and the Monte Carlo Shell Model are presented and compared with the experimental data.

UR - https://www.scopus.com/pages/publications/85177173972

U2 - 10.1140/epja/s10050-023-01172-8

DO - 10.1140/epja/s10050-023-01172-8

M3 - Article

AN - SCOPUS:85177173972

SN - 1434-6001

VL - 59

JO - European Physical Journal A

JF - European Physical Journal A

IS - 11

M1 - 276

ER -

Shape evolution in even-mass ^{98 - 104} Zr isotopes via lifetime measurements using the γγ -coincidence technique

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