The population of metastable states as a probe of relativistic-energy fragmentation reactions

A. M. Denis Bacelar; A. M. Bruce; Zs Podolyák; N. Al-Dahan; M. Górska; S. Lalkovski; S. Pietri; M. V. Ricciardi; A. Algora; N. Alkhomashi; J. Benlliure; P. Boutachkov; A. Bracco; E. Calore; E. Casarejos; I. J. Cullen; A. Y. Deo; P. Detistov; Zs Dombradi; C. Domingo-Pardo; M. Doncel; F. Farinon; G. F. Farrelly; H. Geissel; W. Gelletly; J. Gerl; N. Goel; J. Grȩbosz; R. Hoischen; I. Kojouharov; N. Kurz; S. Leoni; F. Molina; D. Montanari; A. I. Morales; A. Musumarra; D. R. Napoli; R. Nicolini; C. Nociforo; A. Prochazka; W. Prokopowicz; P. H. Regan; B. Rubio; D. Rudolph; K. H. Schmidt; H. Schaffner; S. J. Steer; K. Steiger; P. Strmen; T. P.D. Swan; I. Szarka; J. J. Valiente-Dobón; S. Verma; P. M. Walker; H. Weick; H. J. Wollersheim

doi:10.1016/j.physletb.2013.05.033

The population of metastable states as a probe of relativistic-energy fragmentation reactions

A. M. Denis Bacelar, A. M. Bruce, Zs Podolyák, N. Al-Dahan, M. Górska, S. Lalkovski, S. Pietri, M. V. Ricciardi, A. Algora, N. Alkhomashi, J. Benlliure, P. Boutachkov, A. Bracco, E. Calore, E. Casarejos, I. J. Cullen, A. Y. Deo, P. Detistov, Zs Dombradi, C. Domingo-PardoM. Doncel, F. Farinon, G. F. Farrelly, H. Geissel, W. Gelletly, J. Gerl, N. Goel, J. Grȩbosz, R. Hoischen, I. Kojouharov, N. Kurz, S. Leoni, F. Molina, D. Montanari, A. I. Morales, A. Musumarra, D. R. Napoli, R. Nicolini, C. Nociforo, A. Prochazka, W. Prokopowicz, P. H. Regan, B. Rubio, D. Rudolph, K. H. Schmidt, H. Schaffner, S. J. Steer, K. Steiger, P. Strmen, T. P.D. Swan, I. Szarka, J. J. Valiente-Dobón, S. Verma, P. M. Walker, H. Weick, H. J. Wollersheim

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Abstract

Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following the projectile fragmentation of a 1 AGeV 238U beam by a 9Be target at GSI Helmholtzzentrum für Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2ℏ were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. © 2013 Elsevier B.V.

Original language	English
Pages (from-to)	302-306
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DOIs	https://doi.org/10.1016/j.physletb.2013.05.033
Publication status	Published - 25 Jun 2013
Externally published	Yes

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Denis Bacelar, A. M., Bruce, A. M., Podolyák, Z., Al-Dahan, N., Górska, M., Lalkovski, S., Pietri, S., Ricciardi, M. V., Algora, A., Alkhomashi, N., Benlliure, J., Boutachkov, P., Bracco, A., Calore, E., Casarejos, E., Cullen, I. J., Deo, A. Y., Detistov, P., Dombradi, Z., ... Wollersheim, H. J. (2013). The population of metastable states as a probe of relativistic-energy fragmentation reactions. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 302-306. https://doi.org/10.1016/j.physletb.2013.05.033

@article{77ac39d5bc7846eaa5dbe2e6e8ac8a58,

title = "The population of metastable states as a probe of relativistic-energy fragmentation reactions",

abstract = "Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following the projectile fragmentation of a 1 AGeV 238U beam by a 9Be target at GSI Helmholtzzentrum f{\"u}r Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2ℏ were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. {\textcopyright} 2013 Elsevier B.V.",

author = "{Denis Bacelar}, {A. M.} and Bruce, {A. M.} and Zs Podoly{\'a}k and N. Al-Dahan and M. G{\'o}rska and S. Lalkovski and S. Pietri and Ricciardi, {M. V.} and A. Algora and N. Alkhomashi and J. Benlliure and P. Boutachkov and A. Bracco and E. Calore and E. Casarejos and Cullen, {I. J.} and Deo, {A. Y.} and P. Detistov and Zs Dombradi and C. Domingo-Pardo and M. Doncel and F. Farinon and Farrelly, {G. F.} and H. Geissel and W. Gelletly and J. Gerl and N. Goel and J. Grȩbosz and R. Hoischen and I. Kojouharov and N. Kurz and S. Leoni and F. Molina and D. Montanari and Morales, {A. I.} and A. Musumarra and Napoli, {D. R.} and R. Nicolini and C. Nociforo and A. Prochazka and W. Prokopowicz and Regan, {P. H.} and B. Rubio and D. Rudolph and Schmidt, {K. H.} and H. Schaffner and Steer, {S. J.} and K. Steiger and P. Strmen and Swan, {T. P.D.} and I. Szarka and Valiente-Dob{\'o}n, {J. J.} and S. Verma and Walker, {P. M.} and H. Weick and Wollersheim, {H. J.}",

year = "2013",

month = jun,

day = "25",

doi = "10.1016/j.physletb.2013.05.033",

language = "English",

pages = "302--306",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

Denis Bacelar, AM, Bruce, AM, Podolyák, Z, Al-Dahan, N, Górska, M, Lalkovski, S, Pietri, S, Ricciardi, MV, Algora, A, Alkhomashi, N, Benlliure, J, Boutachkov, P, Bracco, A, Calore, E, Casarejos, E, Cullen, IJ, Deo, AY, Detistov, P, Dombradi, Z, Domingo-Pardo, C, Doncel, M, Farinon, F, Farrelly, GF, Geissel, H, Gelletly, W, Gerl, J, Goel, N, Grȩbosz, J, Hoischen, R, Kojouharov, I, Kurz, N, Leoni, S, Molina, F, Montanari, D, Morales, AI, Musumarra, A, Napoli, DR, Nicolini, R, Nociforo, C, Prochazka, A, Prokopowicz, W, Regan, PH, Rubio, B, Rudolph, D, Schmidt, KH, Schaffner, H, Steer, SJ, Steiger, K, Strmen, P, Swan, TPD, Szarka, I, Valiente-Dobón, JJ, Verma, S, Walker, PM, Weick, H & Wollersheim, HJ 2013, 'The population of metastable states as a probe of relativistic-energy fragmentation reactions', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, pp. 302-306. https://doi.org/10.1016/j.physletb.2013.05.033

TY - JOUR

T1 - The population of metastable states as a probe of relativistic-energy fragmentation reactions

AU - Denis Bacelar, A. M.

AU - Bruce, A. M.

AU - Podolyák, Zs

AU - Al-Dahan, N.

AU - Górska, M.

AU - Lalkovski, S.

AU - Pietri, S.

AU - Ricciardi, M. V.

AU - Algora, A.

AU - Alkhomashi, N.

AU - Benlliure, J.

AU - Boutachkov, P.

AU - Bracco, A.

AU - Calore, E.

AU - Casarejos, E.

AU - Cullen, I. J.

AU - Deo, A. Y.

AU - Detistov, P.

AU - Dombradi, Zs

AU - Domingo-Pardo, C.

AU - Doncel, M.

AU - Farinon, F.

AU - Farrelly, G. F.

AU - Geissel, H.

AU - Gelletly, W.

AU - Gerl, J.

AU - Goel, N.

AU - Grȩbosz, J.

AU - Hoischen, R.

AU - Kojouharov, I.

AU - Kurz, N.

AU - Leoni, S.

AU - Molina, F.

AU - Montanari, D.

AU - Morales, A. I.

AU - Musumarra, A.

AU - Napoli, D. R.

AU - Nicolini, R.

AU - Nociforo, C.

AU - Prochazka, A.

AU - Prokopowicz, W.

AU - Regan, P. H.

AU - Rubio, B.

AU - Rudolph, D.

AU - Schmidt, K. H.

AU - Schaffner, H.

AU - Steer, S. J.

AU - Steiger, K.

AU - Strmen, P.

AU - Swan, T. P.D.

AU - Szarka, I.

AU - Valiente-Dobón, J. J.

AU - Verma, S.

AU - Walker, P. M.

AU - Weick, H.

AU - Wollersheim, H. J.

PY - 2013/6/25

Y1 - 2013/6/25

N2 - Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following the projectile fragmentation of a 1 AGeV 238U beam by a 9Be target at GSI Helmholtzzentrum für Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2ℏ were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. © 2013 Elsevier B.V.

AB - Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following the projectile fragmentation of a 1 AGeV 238U beam by a 9Be target at GSI Helmholtzzentrum für Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 μs and spin values up to 55/2ℏ were used to obtain the corresponding isomeric ratios. The data are compared to theoretical isomeric ratios calculated in the framework of the abrasion-ablation model. Large experimental enhancements are obtained for high-spin isomers in comparison to expected values. © 2013 Elsevier B.V.

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U2 - 10.1016/j.physletb.2013.05.033

DO - 10.1016/j.physletb.2013.05.033

M3 - Article

SN - 0370-2693

SP - 302

EP - 306

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

The population of metastable states as a probe of relativistic-energy fragmentation reactions

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