Half-life measurements of isomeric states populated in projectile fragmentation

M. Bowry; Zs Podolyák; J. Kurcewicz; S. Pietri; M. Bunce; P. H. Regan; F. Farinon; H. Geissel; C. Nociforo; A. Prochazka; H. Weick; P. Allegro; J. Benlliure; G. Benzoni; P. Boutachkov; J. Gerl; M. Gorska; A. Gottardo; N. Gregor; R. Janik; R. Knöbel; I. Kojouharov; T. Kubo; Y. A. Litvinov; E. Merchan; I. Mukha; F. Naqvi; B. Pfeiffer; M. Pfützner; W. Plaß; M. Pomorski; B. Riese; M. V. Ricciardi; K. H. Schmidt; H. Schaffner; N. Kurz; A. M. Denis Bacelar; A. M. Bruce; G. F. Farrelly; N. Alkhomashi; N. Al-Dahan; C. Scheidenberger; B. Sitar; P. Spiller; J. Stadlmann; P. Strmen; B. Sun; H. Takeda; I. Tanihata; S. Terashima; J. J. Valiente Dobon; J. S. Winfield; H. J. Wollersheim; P. J. Woods

doi:10.1063/1.4764266

Half-life measurements of isomeric states populated in projectile fragmentation

M. Bowry^*
, Zs Podolyák
, J. Kurcewicz
, S. Pietri
, M. Bunce
, P. H. Regan
, F. Farinon
, H. Geissel
, C. Nociforo
, A. Prochazka
, H. Weick
, P. Allegro
, J. Benlliure
, G. Benzoni
, P. Boutachkov
, J. Gerl
, M. Gorska
, A. Gottardo
, N. Gregor
, R. Janik

R. Knöbel, I. Kojouharov, T. Kubo, Y. A. Litvinov, E. Merchan, I. Mukha, F. Naqvi, B. Pfeiffer, M. Pfützner, W. Plaß, M. Pomorski, B. Riese, M. V. Ricciardi, K. H. Schmidt, H. Schaffner, N. Kurz, A. M. Denis Bacelar, A. M. Bruce, G. F. Farrelly, N. Alkhomashi, N. Al-Dahan, C. Scheidenberger, B. Sitar, P. Spiller, J. Stadlmann, P. Strmen, B. Sun, H. Takeda, I. Tanihata, S. Terashima, J. J. Valiente Dobon, J. S. Winfield, H. J. Wollersheim, P. J. Woods

^*Corresponding author for this work

School of Physics

University of Surrey
GSI Helmholtz Centre for Heavy Ion Research
Justus Liebig University Giessen
Universidade de São Paulo
University of Santiago de Compostela
National Institute for Nuclear Physics
Laboratori Nazionali di Legnaro
Comenius University
RIKEN
Yale University
University of Warsaw
University of Brighton
Research Center for Nuclear Physics
Beihang University
University of Edinburgh

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Scopus citations

Abstract

The half-lives of excited isomeric states observed in ¹⁹⁵Au, ²⁰¹Tl and ²¹⁵Rn are reported for the first time. Delayed γ-rays were correlated with nuclei produced in the projectile fragmentation of relativistic ²³⁸U ions, unambiguously identified in terms of their atomic number (Z) and mass-to-charge ratio (A/Q) after traversing an in-flight separator. The observation of a long-lived isomeric state in ¹⁹⁵Au with t_1/2=16_-4⁺⁸ μs is presented. Two shorter-lived isomeric states were detected in ²⁰¹Tl and ²¹⁵Rn with t_1/2=95_-21⁺³⁹ and 57_-12⁺²¹ ns respectively. In total 24 isomeric states were identified in different nuclei from Pt to Rn (A ∼ 200) during the current study, the majority of which were previously reported. The wealth of spectroscopic data provides the opportunity to determine the isomeric ratios over a wide range of Z, A and angular momentum (I h) of the reaction products. In particular, high-spin states with I ≳ 18 h provide a robust test of theoretical models of fragmentation.

Original language	English
Title of host publication	Nuclear Structure and Dynamics 2012 - Proceedings of the International Conference
Pages	317-320
Number of pages	4
DOIs	https://doi.org/10.1063/1.4764266
State	Published - 2012
Event	International Conference on Nuclear Structure and Dynamics 2012 - Opatija, Croatia Duration: 9 Jul 2012 → 13 Jul 2012

Publication series

Name	AIP Conference Proceedings
Volume	1491
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	International Conference on Nuclear Structure and Dynamics 2012
Country/Territory	Croatia
City	Opatija
Period	9/07/12 → 13/07/12

Keywords

A/Q
E = 1 GeV A
Eγ
Iγ
NUCLEAR REACTION Be(U,Xγ)
half-lives
isomeric ratios
measured dE(Z)
γγ-coin

Access to Document

10.1063/1.4764266

Cite this

Bowry, M., Podolyák, Z., Kurcewicz, J., Pietri, S., Bunce, M., Regan, P. H., Farinon, F., Geissel, H., Nociforo, C., Prochazka, A., Weick, H., Allegro, P., Benlliure, J., Benzoni, G., Boutachkov, P., Gerl, J., Gorska, M., Gottardo, A., Gregor, N., ... Woods, P. J. (2012). Half-life measurements of isomeric states populated in projectile fragmentation. In Nuclear Structure and Dynamics 2012 - Proceedings of the International Conference (pp. 317-320). (AIP Conference Proceedings; Vol. 1491). https://doi.org/10.1063/1.4764266

@inproceedings{41928c79b8e94b2a923d8816421ce66d,

title = "Half-life measurements of isomeric states populated in projectile fragmentation",

abstract = "The half-lives of excited isomeric states observed in 195Au, 201Tl and 215Rn are reported for the first time. Delayed γ-rays were correlated with nuclei produced in the projectile fragmentation of relativistic 238U ions, unambiguously identified in terms of their atomic number (Z) and mass-to-charge ratio (A/Q) after traversing an in-flight separator. The observation of a long-lived isomeric state in 195Au with t1/2=16-4+8 μs is presented. Two shorter-lived isomeric states were detected in 201Tl and 215Rn with t1/2=95-21+39 and 57-12+21 ns respectively. In total 24 isomeric states were identified in different nuclei from Pt to Rn (A ∼ 200) during the current study, the majority of which were previously reported. The wealth of spectroscopic data provides the opportunity to determine the isomeric ratios over a wide range of Z, A and angular momentum (I h) of the reaction products. In particular, high-spin states with I ≳ 18 h provide a robust test of theoretical models of fragmentation.",

keywords = "A/Q, E = 1 GeV A, Eγ, Iγ, NUCLEAR REACTION Be(U,Xγ), half-lives, isomeric ratios, measured dE(Z), γγ-coin",

author = "M. Bowry and Zs Podoly{\'a}k and J. Kurcewicz and S. Pietri and M. Bunce and Regan, \{P. H.\} and F. Farinon and H. Geissel and C. Nociforo and A. Prochazka and H. Weick and P. Allegro and J. Benlliure and G. Benzoni and P. Boutachkov and J. Gerl and M. Gorska and A. Gottardo and N. Gregor and R. Janik and R. Kn{\"o}bel and I. Kojouharov and T. Kubo and Litvinov, \{Y. A.\} and E. Merchan and I. Mukha and F. Naqvi and B. Pfeiffer and M. Pf{\"u}tzner and W. Pla{\ss} and M. Pomorski and B. Riese and Ricciardi, \{M. V.\} and Schmidt, \{K. H.\} and H. Schaffner and N. Kurz and \{Denis Bacelar\}, \{A. M.\} and Bruce, \{A. M.\} and Farrelly, \{G. F.\} and N. Alkhomashi and N. Al-Dahan and C. Scheidenberger and B. Sitar and P. Spiller and J. Stadlmann and P. Strmen and B. Sun and H. Takeda and I. Tanihata and S. Terashima and \{Valiente Dobon\}, \{J. J.\} and Winfield, \{J. S.\} and Wollersheim, \{H. J.\} and Woods, \{P. J.\}",

year = "2012",

doi = "10.1063/1.4764266",

language = "英语",

isbn = "9780735411036",

series = "AIP Conference Proceedings",

pages = "317--320",

booktitle = "Nuclear Structure and Dynamics 2012 - Proceedings of the International Conference",

note = "International Conference on Nuclear Structure and Dynamics 2012 ; Conference date: 09-07-2012 Through 13-07-2012",

}

Bowry, M, Podolyák, Z, Kurcewicz, J, Pietri, S, Bunce, M, Regan, PH, Farinon, F, Geissel, H, Nociforo, C, Prochazka, A, Weick, H, Allegro, P, Benlliure, J, Benzoni, G, Boutachkov, P, Gerl, J, Gorska, M, Gottardo, A, Gregor, N, Janik, R, Knöbel, R, Kojouharov, I, Kubo, T, Litvinov, YA, Merchan, E, Mukha, I, Naqvi, F, Pfeiffer, B, Pfützner, M, Plaß, W, Pomorski, M, Riese, B, Ricciardi, MV, Schmidt, KH, Schaffner, H, Kurz, N, Denis Bacelar, AM, Bruce, AM, Farrelly, GF, Alkhomashi, N, Al-Dahan, N, Scheidenberger, C, Sitar, B, Spiller, P, Stadlmann, J, Strmen, P, Sun, B, Takeda, H, Tanihata, I, Terashima, S, Valiente Dobon, JJ, Winfield, JS, Wollersheim, HJ & Woods, PJ 2012, Half-life measurements of isomeric states populated in projectile fragmentation. in Nuclear Structure and Dynamics 2012 - Proceedings of the International Conference. AIP Conference Proceedings, vol. 1491, pp. 317-320, International Conference on Nuclear Structure and Dynamics 2012, Opatija, Croatia, 9/07/12. https://doi.org/10.1063/1.4764266

Half-life measurements of isomeric states populated in projectile fragmentation. / Bowry, M.; Podolyák, Zs; Kurcewicz, J. et al.
Nuclear Structure and Dynamics 2012 - Proceedings of the International Conference. 2012. p. 317-320 (AIP Conference Proceedings; Vol. 1491).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Half-life measurements of isomeric states populated in projectile fragmentation

AU - Bowry, M.

AU - Podolyák, Zs

AU - Kurcewicz, J.

AU - Pietri, S.

AU - Bunce, M.

AU - Regan, P. H.

AU - Farinon, F.

AU - Geissel, H.

AU - Nociforo, C.

AU - Prochazka, A.

AU - Weick, H.

AU - Allegro, P.

AU - Benlliure, J.

AU - Benzoni, G.

AU - Boutachkov, P.

AU - Gerl, J.

AU - Gorska, M.

AU - Gottardo, A.

AU - Gregor, N.

AU - Janik, R.

AU - Knöbel, R.

AU - Kojouharov, I.

AU - Kubo, T.

AU - Litvinov, Y. A.

AU - Merchan, E.

AU - Mukha, I.

AU - Naqvi, F.

AU - Pfeiffer, B.

AU - Pfützner, M.

AU - Plaß, W.

AU - Pomorski, M.

AU - Riese, B.

AU - Ricciardi, M. V.

AU - Schmidt, K. H.

AU - Schaffner, H.

AU - Kurz, N.

AU - Denis Bacelar, A. M.

AU - Bruce, A. M.

AU - Farrelly, G. F.

AU - Alkhomashi, N.

AU - Al-Dahan, N.

AU - Scheidenberger, C.

AU - Sitar, B.

AU - Spiller, P.

AU - Stadlmann, J.

AU - Strmen, P.

AU - Sun, B.

AU - Takeda, H.

AU - Tanihata, I.

AU - Terashima, S.

AU - Valiente Dobon, J. J.

AU - Winfield, J. S.

AU - Wollersheim, H. J.

AU - Woods, P. J.

PY - 2012

Y1 - 2012

N2 - The half-lives of excited isomeric states observed in 195Au, 201Tl and 215Rn are reported for the first time. Delayed γ-rays were correlated with nuclei produced in the projectile fragmentation of relativistic 238U ions, unambiguously identified in terms of their atomic number (Z) and mass-to-charge ratio (A/Q) after traversing an in-flight separator. The observation of a long-lived isomeric state in 195Au with t1/2=16-4+8 μs is presented. Two shorter-lived isomeric states were detected in 201Tl and 215Rn with t1/2=95-21+39 and 57-12+21 ns respectively. In total 24 isomeric states were identified in different nuclei from Pt to Rn (A ∼ 200) during the current study, the majority of which were previously reported. The wealth of spectroscopic data provides the opportunity to determine the isomeric ratios over a wide range of Z, A and angular momentum (I h) of the reaction products. In particular, high-spin states with I ≳ 18 h provide a robust test of theoretical models of fragmentation.

AB - The half-lives of excited isomeric states observed in 195Au, 201Tl and 215Rn are reported for the first time. Delayed γ-rays were correlated with nuclei produced in the projectile fragmentation of relativistic 238U ions, unambiguously identified in terms of their atomic number (Z) and mass-to-charge ratio (A/Q) after traversing an in-flight separator. The observation of a long-lived isomeric state in 195Au with t1/2=16-4+8 μs is presented. Two shorter-lived isomeric states were detected in 201Tl and 215Rn with t1/2=95-21+39 and 57-12+21 ns respectively. In total 24 isomeric states were identified in different nuclei from Pt to Rn (A ∼ 200) during the current study, the majority of which were previously reported. The wealth of spectroscopic data provides the opportunity to determine the isomeric ratios over a wide range of Z, A and angular momentum (I h) of the reaction products. In particular, high-spin states with I ≳ 18 h provide a robust test of theoretical models of fragmentation.

KW - A/Q

KW - E = 1 GeV A

KW - Eγ

KW - Iγ

KW - NUCLEAR REACTION Be(U,Xγ)

KW - half-lives

KW - isomeric ratios

KW - measured dE(Z)

KW - γγ-coin

UR - https://www.scopus.com/pages/publications/84873831071

U2 - 10.1063/1.4764266

DO - 10.1063/1.4764266

M3 - 会议稿件

AN - SCOPUS:84873831071

SN - 9780735411036

T3 - AIP Conference Proceedings

SP - 317

EP - 320

BT - Nuclear Structure and Dynamics 2012 - Proceedings of the International Conference

T2 - International Conference on Nuclear Structure and Dynamics 2012

Y2 - 9 July 2012 through 13 July 2012

ER -

Half-life measurements of isomeric states populated in projectile fragmentation

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this