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1. Decay heat studies for nuclear energy

Author

Algora, A., Jordan, D., Taín, J. L., Rubio, B., Agramunt, J., Caballero, L., Nácher, E., Perez-Cerdan, A. B., Molina, F., Estevez, E., Valencia, E., Krasznahorkay, A., Hunyadi, M. D., Gulyás, J., Vitéz, A., Csatlós, M., Csige, L., Eronen, T., Rissanen, J., Saastamoinen, A., Moore, I. D., Penttilä, H., Kolhinen, V. S., Burkard, K., Hüller, W., Batist, L., Gelletly, W., Nichols, A. L., Yoshida, T., Sonzogni, A. A., Peräjärvi, K., Äystö, Juha, editor, Eronen, Tommi, editor, Jokinen, Ari, editor, Kankainen, Anu, editor, Moore, Iain D., editor, and Penttilä, Heikki, editor

Published
2014
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2. Online test of the FRS Ion Catcher at GSI

Author

Petrick, M., Plaß, W.R., Behr, K.-H., Brünle, A., Caceres, L., Clark, J., Di, Z., Elisseev, S., Facina, M., Fettouhi, A., Geissel, H., Hüller, W., Huyse, M., Karagiannis, C., Kindler, B., Knöbel, R., Kudryavtsev, Y., Kurcewicz, J., Levant, T., Litvinov, Yu.A., Lommel, B., Maier, M., Morrissey, D.J., Münzenberg, G., Portillo, M., Savard, G., Scheidenberger, C., Van Duppen, P., Weick, H., Winkler, M., and Zabransky, B.

Published
2008
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4. The status of the Super-FRS in-flight facility at FAIR

Author

Winkler, M., Geissel, H., Weick, H., Achenbach, B., Behr, K.-H., Boutin, D., Brünle, A., Gleim, M., Hüller, W., Karagiannis, C., Kelic, A., Kindler, B., Kozlova, E., Leibrock, H., Lommel, B., Moritz, G., Mühle, C., Münzenberg, G., Nociforo, C., Plass, W., Scheidenberger, C., Simon, H., Sümmerer, K., Tahir, N.A., Tauschwitz, A., Tomut, M., Winfield, J.S., and Yavor, M.

Published
2008
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5. Decay heat studies for nuclear energy

Author

Algora, A., primary, Jordan, D., additional, Taín, J. L., additional, Rubio, B., additional, Agramunt, J., additional, Caballero, L., additional, Nácher, E., additional, Perez-Cerdan, A. B., additional, Molina, F., additional, Estevez, E., additional, Valencia, E., additional, Krasznahorkay, A., additional, Hunyadi, M. D., additional, Gulyás, J., additional, Vitéz, A., additional, Csatlós, M., additional, Csige, L., additional, Eronen, T., additional, Rissanen, J., additional, Saastamoinen, A., additional, Moore, I. D., additional, Penttilä, H., additional, Kolhinen, V. S., additional, Burkard, K., additional, Hüller, W., additional, Batist, L., additional, Gelletly, W., additional, Nichols, A. L., additional, Yoshida, T., additional, Sonzogni, A. A., additional, and Peräjärvi, K., additional

Published
2012
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7. Exploring the reactor heat problem: Study of the beta decay of 104,105Tc using the TAS technique

Author

Algora, A., Taín, J. L., Perez, A. B., Rubio, B., Agramunt, J., Caballero, L., Nácher, E., Krasznahorkay, A., Hunyadi, M. D., Gulyás, J., Vitéz, A., Äystö, J., Penttilä, H., Rinta-Antila, S., Moore, I., Eronen, T., Jokinen, A., Nieminen, A., Hakala, J., Karvonen, P., Kankainen, A., Hager, U., Sonoda, T., Burkard, K., Hüller, W., Batist, L., Gelletly, W., Yoshida, T., Nichols, A. L., and Sonzogni, A.

Published
2007
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8. Shapes of [superscript 192,190]Pb ground states from β-decay studies using the total-absorption technique

Author

Estévez Aguado, M. E., Algora, A., Agramunt, J., Rubio, B., Taín, J. L., Jordán, D., Fraile, L. M., Gelletly, W., Frank, A., Csatlós, M., Csige, L., Dombrádi, Zs., Krasznahorkay, A., Nácher, E., Sarriguren, P., Borge, M. J. G., Briz, J. A., Tengblad, O., Molina, F., Kowalska, M., Fedosseev, V. N., Marsh, B. A., Fedorov, D. V., Molkanov, P. L., Andreyev, A. N., Seliverstov, M. D., Burkard, K., Hüller, W., Moreno Diaz, Oscar, Massachusetts Institute of Technology. Department of Physics, and Moreno Diaz, Oscar

Subjects
Nuclear Experiment
Abstract

The β decay of [superscript 192,190]Pb has been studied using the total absorption technique at the ISOLDE (CERN) facility. The β-decay strength deduced from the measurements, combined with QRPA theoretical calculations, allow us to infer that the ground states of the [superscript 192,190]Pb isotopes are spherical. These results represent the first application of the shape determination method using the total absorption technique for heavy nuclei and in a region where there is considerable interest in nuclear shapes and shape effects., Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project FPA2008-06419-C02-01), Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project FPA2011-24553), Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project FPA2013-41267-P), Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project FPA2014-52823-C2-1-P), Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project FRPA2012-32443), Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project FIS2011-23565), Spain. Ministerio de Ciencia e Innovacion y Ministerio de Economia y Competitividad (Project CSD-2007-00042), Seventh Framework Programme (European Commission) (ENSAR Contract 262010), Seventh Framework Programme (European Commission) (Contract PIOF-GA-2011-298364), Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) (Contract K100835), Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) (Contract K106035)

Published
2015

9. Shapes of $^{192, 190}$Pb ground states from β -decay studies using the total-absorption technique

Author

Estévez Aguado, M. E., Algora, A., Csige, L., Dombrádi, Zs., Krasznahorkay, A., Nácher, E., Sarriguren, P., Borge, M. J. G., Briz, J. A., Tengblad, O., Molina, F., Moreno, O., Agramunt, J., Kowalska, M., Fedosseev, V. N., Marsh, B. A., Fedorov, D. V., Molkanov, P. L., Andreyev, A. N., Seliverstov, M. D., Burkard, K., Hüller, W., Rubio, B., Taín, J. L., Jordán, D., Fraile, L. M., Gelletly, W., Frank, A., and Csatlós, M.

Subjects
ddc:530
Published
2015
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10. Total absorption study of the \beta decay of 102,104,105Tc

Author

Jordan, D., Algora, Alejandro, Taín, J.L., Rubio, B., Agramunt, J., Perez-Cerdan, A.B., Molina, F., Caballero, L., Nácher, E., Krasznahorkay, A., Hunyadi, M.D., Gulyás, J., Vitéz, A., Csatlós, M., Csige, L., Äystö, Juha, Penttilä, Heikki, Moore, Iain, Eronen, Tommi, Jokinen, Ari, Nieminen, Arto, Hakala, Jani, Karvonen, Pasi, Kankainen, Anu, Saastamoinen, Antti, Rissanen, Juho, Kessler, Thomas, Weber, Christine, Ronkainen, Janne, Rahaman, Saidur, Elomaa, Viki-Veikko, Hager, Ulrike, Rinta-Antila, Sami, Sonoda, Tetsu, Burkard, K., Hüller, W., Batist, L., Gelletly, W., Nichols, A.L., Yoshida, T., Sonzogni, A.A., Peräjärvi, Kari, Petrovici, A., Schmid, K.W., and Faessler, A.

Subjects
Experimental nuclear physics
Abstract

The β-feeding probabilities for three important contributors to the decay heat in nuclear reactors, namely 102,104,105Tc, have been measured using the total absorption spectroscopy technique. For the measurements, sources of very high isobaric purity have been obtained using a Penning trap (JYFLTRAP). A detailed description of the data analysis is given and the results are compared with high-resolution measurements and theoretical calculations. peerReviewed

Published
2013

11. Shapes ofPb192,190ground states fromβ-decay studies using the total-absorption technique

Author

Estévez Aguado, M. E., primary, Algora, A., additional, Agramunt, J., additional, Rubio, B., additional, Taín, J. L., additional, Jordán, D., additional, Fraile, L. M., additional, Gelletly, W., additional, Frank, A., additional, Csatlós, M., additional, Csige, L., additional, Dombrádi, Zs., additional, Krasznahorkay, A., additional, Nácher, E., additional, Sarriguren, P., additional, Borge, M. J. G., additional, Briz, J. A., additional, Tengblad, O., additional, Molina, F., additional, Moreno, O., additional, Kowalska, M., additional, Fedosseev, V. N., additional, Marsh, B. A., additional, Fedorov, D. V., additional, Molkanov, P. L., additional, Andreyev, A. N., additional, Seliverstov, M. D., additional, Burkard, K., additional, and Hüller, W., additional

Published
2015
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12. Technical Design Report on the Super-FRS

Author

Geissel, Hans, Winkler, M., Aumann, T., Äystö, J., Baer, R., Berz, M., Boutin, D., Brandau, C., Brünle, A., Dendooven, P., Fehrenbacher, G., Floch, E., Weick, H., Gleim, M., Hüller, W., Iwase, H., Kalimov, A., Karagiannis, C., Kauschke, M., Kelic, A., Kindler, B., Klappich, G., Kozlova, E., Behr, K.-H., Krämer, A., Kratz, A., Kubo, T., Kurz, N., Kusaka, K., Leibrock, H., Lettry, J., Litvinov, S., Litvinov, Y., Lommel, B., Münzenberg, G., Manikonda, S., Marbs, A., Moritz, G., Mühle, C., Nociforo, C., Nolen, J. A., Penttilä, H., Plass, W., Podolyak, Z., Prochazka, A., Simon, H., Pschorn, I., Radon, T., Ramakers, H., Reich-Sprenger, H., Saren, J., Savard, G., Scheidenberger, C., Schnizer, P., Schwickert, M., Sherrill, B. M., Sümmerer, K., Sitar, B., Stafinak, A., Stieglitz, R., Svedentsov, M., Tahir, N. A., Tauschwitz, An., Tarasov, O., Tomut, M., Vobly, P., Welker, H., Achenbach, B., Wilfinger, R., Will, Ch., Winfield, J. S., Xiang, Y., Yavor, M., Yoshida, A., Zeller, A. F., Acker, D., and Ackermann, D.

Published
2008

14. Technical Report on the Design, Construction, Commissioning and Operation of the Super-FRS of FAIR

Author

Geissel, Hans, Winkler, M., Bleile, A., Breitenberger, G., Brünle, A., Emling, H., Fehrenbacher, G., Gleim, M., Hüller, W., Iwase, H., Karagiannis, C., Kaiser, R., Weick, H., Kelic, A., Kindler, B., Klappich, G., Kubo, T., Kurz, N., Kusaka, K., Lettry, J., Lommel, B., Moritz, G., Morrissey, D., Behr, K., Mühle, C., Nolen, J. A., Pschorn, I., Radon, T., Ronningen, R., Savard, G., Scheidenberger, C., Shatunov, Y., Sherrill, B. M., Tahir, N. A., Münzenberg, G., Yavor, M., Yoshida, A., Yu, X., Zeller, A. F., Simon, H., Sümmerer, K., Achenbach, B., Ahle, L., and Aumann, T.

Published
2005

15. Total absorption study of theβdecay of102,104,105Tc

Author

Jordan, D., primary, Algora, A., additional, Taín, J. L., additional, Rubio, B., additional, Agramunt, J., additional, Perez-Cerdan, A. B., additional, Molina, F., additional, Caballero, L., additional, Nácher, E., additional, Krasznahorkay, A., additional, Hunyadi, M. D., additional, Gulyás, J., additional, Vitéz, A., additional, Csatlós, M., additional, Csige, L., additional, Äysto, J., additional, Penttilä, H., additional, Moore, I. D., additional, Eronen, T., additional, Jokinen, A., additional, Nieminen, A., additional, Hakala, J., additional, Karvonen, P., additional, Kankainen, A., additional, Saastamoinen, A., additional, Rissanen, J., additional, Kessler, T., additional, Weber, C., additional, Ronkainen, J., additional, Rahaman, S., additional, Elomaa, V., additional, Hager, U., additional, Rinta-Antila, S., additional, Sonoda, T., additional, Burkard, K., additional, Hüller, W., additional, Batist, L., additional, Gelletly, W., additional, Nichols, A. L., additional, Yoshida, T., additional, Sonzogni, A. A., additional, Peräjärvi, K., additional, Petrovici, A., additional, Schmid, K. W., additional, and Faessler, A., additional

Published
2013
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16. βdecay of78Sr

Author

Pérez-Cerdán, A. B., primary, Rubio, B., additional, Gelletly, W., additional, Algora, A., additional, Agramunt, J., additional, Burkard, K., additional, Hüller, W., additional, Nácher, E., additional, Sarriguren, P., additional, Caballero, L., additional, Molina, F., additional, Fraile, L. M., additional, Reillo, E., additional, Borge, M. J. G., additional, Dessagne, Ph., additional, Jungclaus, A., additional, and Salsac, M.-D., additional

Published
2011
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17. β-decay study of150Er,152Yb, and156Yb: Candidates for a monoenergetic neutrino beam facility

Author

Estevez Aguado, M. E., primary, Algora, A., additional, Rubio, B., additional, Bernabeu, J., additional, Nácher, E., additional, Taín, J. L., additional, Gadea, A., additional, Agramunt, J., additional, Burkard, K., additional, Hüller, W., additional, Döring, J., additional, Kirchner, R., additional, Mukha, I., additional, Plettner, C., additional, Roeckl, E., additional, Grawe, H., additional, Collatz, R., additional, Hellström, M., additional, Cano-Ott, D., additional, Karny, M., additional, Janas, Z., additional, Gierlik, M., additional, Płochocki, A., additional, Rykaczewski, K., additional, Batist, L., additional, Moroz, F., additional, Wittman, V., additional, Blazhev, A., additional, Valiente, J. J., additional, and Espinoza, C., additional

Published
2011
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18. TAS measurements for reactor physics and nuclear structure

Author

Algora, A., primary, Jordan, D., additional, Taín, J. L., additional, Rubio, B., additional, Agramunt, J., additional, Caballero, L., additional, Nácher, E., additional, Perez-Cerdan, A. B., additional, Molina, F., additional, Estevez, E., additional, Krasznahorkay, A., additional, Hunyadi, M. D., additional, Gulyás, J., additional, Vitéz, A., additional, Csatlós, M., additional, Csige, L., additional, Äysto, J., additional, Penttilä, H., additional, Rinta-Antila, S., additional, Moore, I., additional, Eronen, T., additional, Jokinen, A., additional, Nieminen, A., additional, Hakala, J., additional, Karvonen, P., additional, Kankainen, A., additional, Hager, U., additional, Sonoda, T., additional, Saastamoinen, A., additional, Rissanen, J., additional, Kessler, T., additional, Weber, C., additional, Ronkainen, J., additional, Rahaman, S., additional, Elomaa, V., additional, Burkard, K., additional, Hüller, W., additional, Batist, L., additional, Gelletly, W., additional, Nichols, A. L., additional, Yoshida, T., additional, Sonzogni, A. A., additional, Peräjärvi, K., additional, Demetriou, Paraskevi, additional, Julin, Rauno, additional, and Harissopulos, Sotirios, additional

Published
2011
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19. Reactor Decay Heat inPu239: Solving theγDiscrepancy in the 4–3000-s Cooling Period

Author

Algora, A., primary, Jordan, D., additional, Taín, J. L., additional, Rubio, B., additional, Agramunt, J., additional, Perez-Cerdan, A. B., additional, Molina, F., additional, Caballero, L., additional, Nácher, E., additional, Krasznahorkay, A., additional, Hunyadi, M. D., additional, Gulyás, J., additional, Vitéz, A., additional, Csatlós, M., additional, Csige, L., additional, Äysto, J., additional, Penttilä, H., additional, Moore, I. D., additional, Eronen, T., additional, Jokinen, A., additional, Nieminen, A., additional, Hakala, J., additional, Karvonen, P., additional, Kankainen, A., additional, Saastamoinen, A., additional, Rissanen, J., additional, Kessler, T., additional, Weber, C., additional, Ronkainen, J., additional, Rahaman, S., additional, Elomaa, V., additional, Rinta-Antila, S., additional, Hager, U., additional, Sonoda, T., additional, Burkard, K., additional, Hüller, W., additional, Batist, L., additional, Gelletly, W., additional, Nichols, A. L., additional, Yoshida, T., additional, Sonzogni, A. A., additional, and Peräjärvi, K., additional

Published
2010
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20. Systematic Study of EC Decays in the [sup 146]Gd Region Relevant for a Monoenergetic Neutrino Beam Facility

Author

Estevez Aguado, M. E., primary, Algora, A., additional, Rubio, B., additional, Bernabeu, J., additional, Nacher, E., additional, Tain, J. L., additional, Cano, D., additional, Gadea, A., additional, Batist, L., additional, Burkard, K., additional, Döring, J., additional, Gierlik, M., additional, Hüller, W., additional, Kirchner, R., additional, Mukha, I., additional, Plettner, C., additional, Roeck, E., additional, Valiente, J. J., additional, Caballero, J. A., additional, Alonso, C. E., additional, Andrés, M. V., additional, García Ramos, J. E., additional, and Pérez-Bernal, F., additional

Published
2010
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21. Applications of the total absorption technique to improve reactor decay heat calculations: study of the beta decay of [sup 102,104,105]Tc

Author

Algora, A., primary, Jordan, D., additional, Taín, J. L., additional, Rubio, B., additional, Agramunt, J., additional, Perez-Cerdan, A. B., additional, Molina, F., additional, Caballero, L., additional, Nácher, E., additional, Krasznahorkay, A., additional, Hunyadi, M. D., additional, Gulyás, J., additional, Vitéz, A., additional, Csatlós, M., additional, Csige, L., additional, Äystö, J., additional, Penttilä, H., additional, Moore, I. D., additional, Eronen, T., additional, Jokinen, A., additional, Nieminen, A., additional, Hakala, J., additional, Karvonen, P., additional, Kankainen, A., additional, Saastamoinen, A., additional, Rissanen, J., additional, Kessler, T., additional, Weber, C., additional, Ronkainen, J., additional, Rahaman, S., additional, Elomaa, V., additional, Hager, U., additional, Rinta-Antila, S., additional, Sonoda, T., additional, Burkard, K., additional, Hüller, W., additional, Batist, L., additional, Gelletly, W., additional, Yoshida, T., additional, Nichols, A. L., additional, Sonzogni, A., additional, Peräjärvi, K., additional, Jolie, Jan, additional, Zilges, Andreas, additional, Warr, Nigel, additional, and Blazhev, Andrey, additional

Published
2009
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22. Study of dipole excitations and the single particle structure of neutron rich Ni isotopes

Author

Mahata, K., primary, Paschalis, S., additional, Adrich, P., additional, Aksouh, F., additional, Aumann, T., additional, Babilon, M., additional, Behr, K.-H., additional, Benlliure, J., additional, Berg, T., additional, Boehmer, M., additional, Boretzky, K., additional, Brünle, A., additional, Casarejos, E., additional, Chartier, M., additional, Chatillon, A., additional, Cortina-Gil, D., additional, Pramanik, U. Datta, additional, Deveaux, L., additional, Elvers, M., additional, Emling, H., additional, Fernandez-Dominguez, B., additional, Gorska, M., additional, Hüller, W., additional, Ickert, G., additional, Johansson, H., additional, Junghans, A., additional, Karagiannis, C., additional, Kern, L., additional, Kiselev, O., additional, Klimkiewicz, A., additional, Kurz, N., additional, Labiche, M., additional, Le Bleis, T., additional, Lemmon, R., additional, Lindenberg, K., additional, Litvinov, Y., additional, Maierbeck, P., additional, Müller, S., additional, Nilsson, T., additional, Nociforo, C., additional, Palit, R., additional, Prokopowicz, W., additional, Rossi, D., additional, Simon, H., additional, Sümmerer, K., additional, Wagner, A., additional, Walus, W., additional, Weick, H., additional, Winkler, M., additional, Demetriou, P., additional, Julin, R., additional, and Harissopulos, S. V., additional

Published
2008
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23. β-decay data requirements for reactor decay heat calculations: study of the possible source of the gamma-ray discrepancy in reactor heat summation calculations

Author

Algora, A., primary, Taín, J. L., additional, Perez-Cerdan, A. B., additional, Rubio, B., additional, Agramunt, J., additional, Caballero, L., additional, Nácher, E., additional, Jordan, D., additional, Molina, F., additional, Krasznahorkay, A., additional, Hunyadi, M. D., additional, Gulyás, J., additional, Vitéz, A., additional, Csatlós, M., additional, Csige, L., additional, Äysto, J., additional, Penttilä, H., additional, Rinta-Antila, S., additional, Moore, I., additional, Eronen, T., additional, Jokinen, A., additional, Nieminen, A., additional, Hakala, J., additional, Karvonen, P., additional, Kankainen, A., additional, Hager, U., additional, Sonoda, T., additional, Saastamoinen, A., additional, Rissanen, J., additional, Kessler, T., additional, Weber, C., additional, Ronkainen, J., additional, Rahaman, S., additional, Elomaa, V., additional, Burkard, K., additional, Hüller, W., additional, Batist, L., additional, Gelletly, W., additional, Yoshida, T., additional, Nichols, A. L., additional, Sonzogni, A., additional, and Peräjärvi, K., additional

Published
2007
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24. Recent developments at the GSI Online Mass Separator

Author

Schmidt, K., primary, Borcea, R., additional, Burkard, K., additional, Döring, J., additional, Górska, M., additional, Grawe, H., additional, Hüller, W., additional, Janas, Z., additional, Kirchner, R., additional, La Commara, M., additional, Mazzocchi, C., additional, and Roeckl, E., additional

Published
2002
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25. Recent developments at the GSI on-line mass separator

Author

Burkard, K., primary, Collatz, R., additional, Hellström, M., additional, Hu, Z., additional, Hüller, W., additional, Klepper, O., additional, Kirchner, R., additional, Roeckl, E., additional, Schmidt, K., additional, Shibata, M., additional, and Weber, A., additional

Published
1997
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30. Systematic Study of EC Decays in the 146Gd Region Relevant for a Monoenergetic Neutrino Beam Facility.

Author

Estevez Aguado, M. E., Algora, A., Rubio, B., Bernabeu, J., Nacher, E., Tain, J. L., Cano, D., Gadea, A., Batist, L., Burkard, K., Döring, J., Gierlik, M., Hüller, W., Kirchner, R., Mukha, I., Plettner, C., Roeck, E., and Valiente, J. J.

Subjects
NEUTRINOS, OSCILLATIONS, RADIOACTIVE decay, SPECTRUM analysis, HIGH resolution spectroscopy, BETA decay
Abstract

The availability of a monochromatic neutrino source with adjustable energy could be an invaluable tool for the study of neutrino oscillations and related phenomena. We have studied the beta decay of 152Yb, 150Er and 156Yb, which could be possible candidate nuclei for the construction of such facility, using the Total Absorption Gamma Spectroscopy (TAGS) technique. The results from these measurements are compared with High Resolution (HR) data available from databases. The importance of the use of the TAGS technique is discussed. [ABSTRACT FROM AUTHOR]

Published
2010
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31. Exploring the reactor heat problem: Study of the beta decay of 104,105Tc using the TAS technique

Author

Algora, A., Taín, J. L., Perez, A. B., Rubio, B., Agramunt, J., Caballero, L., Nácher, E., Krasznahorkay, A., Hunyadi, M. D., Gulyás, J., Vitéz, A., Äystö, J., Penttilä, H., Rinta-Antila, S., Moore, I., Eronen, T., Jokinen, A., Nieminen, A., Hakala, J., Karvonen, P., Kankainen, A., Hager, U., Sonoda, T., Burkard, K., Hüller, W., Batist, L., Gelletly, W., Yoshida, T., Nichols, A. L., and Sonzogni, A.

Abstract

Abstract.: The decay heat of fission products plays an important role in predictions of the heat up of nuclear fuel in reactors. The released energy is calculated as the summation of the activities of all fission products $P(t) =\sum E_i\lambda_iN_i(t)$ , where Ei is the decay energy of nuclide i, λi is the decay constant of nuclide i and Ni(t) is the number of nuclide i at cooling time t. Even though the reproduction of the measured decay heat has improved in recent years, there is still a long standing discrepancy in the t ∼1000 s cooling time for some fuels. A possible explanation to this improper description has been found in the work of Yoshida et al [1], where it has been shown that the incomplete knowledge of the β-decay of some Tc isotopes can be the source of the systematic discrepancy. Motivated by [1], we have recently measured the β-decay process of some Tc isotopes using a total absorption spectrometer at the IGISOL facility in Jyväskylä. The results of the measurements as well as the their consequences on summation calculations are discussed.

Published
2007
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32. β decay of 78Sr.

Author

Perez-Cerdän, A. B., Rubio, B., Gelletly, W., Algora, A., Agramunt, J., Burkard, K., Hüller, W., Nächer, E., Sarriguren, P., Caballero, L., Molina, F., Fraile, L. M., Reillo, E., Borge, M. J. G., Dessagne, Ph., Jungclaus, A., and Salsac, M. -D.

Subjects
*ELECTRONS, *SPECTROMETERS, *SPECTRUM analysis instruments, *HARTREE-Fock approximation, *APPROXIMATION theory
Abstract

The γ rays and conversion electrons emitted in the β decay of 78Sr to levels in 78Rb have been studied using Ge detectors and a mini-orange spectrometer. A reliable level scheme based on the results of these experiments has been established. The properties of the levels in 78Rb have been compared with calculations based on deformed Hartree-Fock with Skyrme interactions and pairing correlations in the BCS approximation. This has allowed an Interpretation of the nature of the observed sets of levels in the odd-odd nucleus 78Rb. [ABSTRACT FROM AUTHOR]

Published
2011
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33. β-decay study of 150Er, 152Yb, and 156Yb: Candidates for a monoenergetic neutrino beam facility.

Author

Estevez Aguado, M. E., Algora, A., Rubio, B., Bernabeu, J., Nácher, E., Taín, J. L., Gadea, A., Agramunt, J., Burkard, K., Hüller, W., Döring, J., Kirchner, R., Mukha, I., Plettner, C., Roeckl, E., Grawe, H., Collatz, R., Hellström, M., Cano-Ott, D., and Karny, M.

Subjects
*NEUTRINO interactions, *PARTICLES (Nuclear physics), *ABSORPTION spectra, *NUCLEAR reactions, *RADIOACTIVE nuclear beams
Abstract

The β decays of 150Er, 152Yb, and 156Yb nuclei are investigated using the total absorption spectroscopy technique. These nuclei can be considered possible candidates for forming the beam of a monoenergetic neutrino beam facility based on the electron capture (EC) decay of radioactive nuclei. Our measurements confirm that for the cases studied the EC decay proceeds mainly to a single state in the daughter nucleus. [ABSTRACT FROM AUTHOR]

Published
2011
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34. Reactor decay heat in 239Pu: solving the γ discrepancy in the 4-3000-s cooling period.

Author

Algora A, Jordan D, Taín JL, Rubio B, Agramunt J, Perez-Cerdan AB, Molina F, Caballero L, Nácher E, Krasznahorkay A, Hunyadi MD, Gulyás J, Vitéz A, Csatlós M, Csige L, Aysto J, Penttilä H, Moore ID, Eronen T, Jokinen A, Nieminen A, Hakala J, Karvonen P, Kankainen A, Saastamoinen A, Rissanen J, Kessler T, Weber C, Ronkainen J, Rahaman S, Elomaa V, Rinta-Antila S, Hager U, Sonoda T, Burkard K, Hüller W, Batist L, Gelletly W, Nichols AL, Yoshida T, Sonzogni AA, and Peräjärvi K

Abstract

The β feeding probability of (102,104,105,106,107)Tc, 105Mo, and 101Nb nuclei, which are important contributors to the decay heat in nuclear reactors, has been measured using the total absorption technique. We have coupled for the first time a total absorption spectrometer to a Penning trap in order to obtain sources of very high isobaric purity. Our results solve a significant part of a long-standing discrepancy in the γ component of the decay heat for 239Pu in the 4-3000 s range.

Published
2010
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