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204 results on '"Stroh H"'

1. The cross section functions for neutron induced reactions with Rhenium in the energy range 13.0–19.5 MeV

Author

Jovančević N., Daraban L., Stroh H., Oberstedt S., Hult M., Bonaldi C., Geerts W., Hambsch F.-J., Lutter G., Marissens G., and Vidali M.

Subjects
Physics, QC1-999
Abstract

The technique for measuring neutron activation cross-sections using wide energy neutron beams (NAXSUN) was recently developed at JRC-Geel . This method is based on the detection of the gamma activity induced by the activation of the samples in different but overlapping neutron fields and following an unfolding procedure. In the present work, measurements of the cross-section functions by the NAXSUN technique for the (n,a), (n,2n), (n,p) and (n,3n) reactions on rhenium isotopes 185Re and 187Re were performed. The results are the first experimental data for the mentioned reaction cross-sections in the energy range 13.0–19.5 MeV. The obtained data are of interest for possible applications of Re in nuclear technology and medicine.

Published
2017
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2. New limits on double-beta decay of $^{190}$Pt and $^{198}$Pt

Author

Danevich, F. A., Hult, M., Junghans, A., Kasperovych, D. V., Kropivyansky, B. N., Lutter, G., Marissens, G., Polischuk, O. G., Romaniuk, M. V., Stroh, H., Tessalina, S., Tretyak, V. I., and Ware, B.

Subjects
Nuclear Experiment
Abstract

A search for double-beta decay of $^{190}$Pt and $^{198}$Pt with emission of $\gamma$-ray quanta was realized at the HADES underground laboratory with a 148 g platinum sample measured by two ultralow-background HPGe detectors over 8946 h. The isotopic composition of the platinum sample has been measured with high precision using inductively coupled plasma mass spectrometry. New lower limits for the half-lives of $^{190}$Pt relative to different channels and modes of the decays were set on the level of $\lim T_{1/2}\sim 10^{14}-10^{16}$ yr. A possible exact resonant $0\nu KN$ transition to the 1,2 1326.9 keV level of $^{190}$Os is limited for the first time as $T_{1/2} \geq 2.5 \times10^{16}$ yr. A new lower limit on the double-beta decay of $^{198}$Pt to the first excited level of $^{198}$Hg was set as $T_{1/2} \geq 3.2\times10^{19}$ yr, one order of magnitude higher than the limit obtained in the previous experiment., Comment: 23 pages, 11 figures, 4 tables

Published
2022
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3. Constraints on partial half-lives of Ce-136 and Ce-138 double electron captures

Author

Lehnert, B., Hult, M., Lutter, G., Marissens, G., Oberstedt, S., Stroh, H., Kotila, J., Oberstedt, A., and Zuber, K.

Subjects
Nuclear Experiment
Abstract

The gamma-ray emissions from a radiopure cerium-bromide crystal with a mass of 4381 g were measured for a total of 497.4 d by means of high-resolution gamma-ray spectrometry in the HADES underground laboratory at a depth of 500 m.w.e. A search for 0/2nee and 0/2neb+ double beta decay transitions of Ce-136 and Ce-138 was performed using Bayesian analysis techniques. No signals were observed for a total of 35 investigated decay modes. 90% credibility limits were set in the order of 1e18-1e19 a. Existing constraints from a cerium oxide powder measurement were tested with a different cerium compound and half-life limits could be improved for most of the decay modes. The most likely accessible decay mode of the Ce-136 2nee transition into the 0+1 state of Ba-136 results in a new best 90% credibility limit of 5.0e18 a.

Published
2021
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5. Constraints on partial half-lives of Ce136 and Ce138 double electron captures

Author

Lehnert, B, Hult, M, Lutter, G, Marissens, G, Oberstedt, S, Stroh, H, Kotila, J, Oberstedt, A, and Zuber, K

Subjects
Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

The γ-ray emissions from a radiopure cerium-bromide crystal with a mass of 4381 g were measured for a total of 497.4 d by means of high-resolution γ-ray spectrometry in the HADES underground laboratory at a depth of 500 m.w.e. A search for 0/2νϵϵ and 0/2νϵβ+ double beta decay transitions of Ce136 and Ce138 was performed using Bayesian analysis techniques. No signals were observed for a total of 35 investigated decay modes. 90% credibility limits were set in the order of 1018-1019 yr. Existing constraints from a cerium oxide powder measurement were tested with a different cerium compound and half-life limits could be improved for most of the decay modes. The most likely accessible decay mode of the Ce136 2νϵϵ transition into the 01+ state of Ba136 results in a new best 90% credibility limit of 5.0×1018 yr.

Published
2022

7. Measurement of the 134Cs half-life in support of the exponential-decay law.

Author

Pomm, S., Stroh, H., and Paepen, J.

Subjects
*STATISTICAL accuracy, *STANDARD deviations, *MEASUREMENT
Abstract

The half-life of 134Cs has been determined through 882 and 471 activity measurements of two sources over 12 years with a re-entrant ionisation chamber in a temperature-stabilised room. The data were aggregated from in total 204 565 and 99 486 ionisation current measurements with 0.057 % standard deviation. The decay curves adhere to the exponential-decay law, devoid of any cyclic perturbations at daily, monthly, and multi-annual scales, maintaining an exceptionally low standard deviation of 0.0003 % on the amplitude. A discernible annual cycle with an amplitude of 0.0051 (3) % was effectively mitigated to an insignificant level of 0.0009 (3) % by compensating the residuals proportionally to daily variations in ambient humidity. The study yielded a half-life value for 134Cs of 754.200 (53) d or 2.06493 (14) a, with a relative standard uncertainty of 0.0070 %. The result obtained in this work can be recommended as a reference value, owing to its high statistical accuracy and conservative estimate of systematic errors. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Ambient humidity, the overlooked influencer of radioactivity measurements

Author

Pommé, S, primary, Stroh, H, additional, Altzitzoglou, T, additional, Paepen, J, additional, Van Ammel, R, additional, Marouli, M, additional, Verheyen, L, additional, Unterweger, M, additional, Fitzgerald, R, additional, Bergeron, D E, additional, Pibida, L, additional, Nähle, O, additional, Kossert, K, additional, Ramirez, N, additional, Bendall, E, additional, Fenwick, A, additional, Ferreira, K, additional, Keightley, J, additional, Baker, M, additional, Collins, S, additional, Michotte, C, additional, Courte, S, additional, Coulon, R, additional, Jackson, T W, additional, Van Wyngaardt, W M, additional, Fazio, A, additional, De Felice, P, additional, Vodenik, B, additional, Korun, M, additional, Juget, F, additional, Bailat, C, additional, Nedjadi, Y, additional, Bochud, F, additional, Buchillier, T, additional, Roy, T, additional, Galea, R, additional, Kajan, I, additional, Van Rooy, M W, additional, McGinnity, P, additional, Tucakovic, I, additional, Osvath, I, additional, and Pelczar, K, additional

Published
2023
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21. Constraints on partial half-lives of Ce136 and Ce138 double electron captures

Author

Lehnert, B., Hult, M., Lutter, G., Marissens, G., Oberstedt, S., Stroh, H., Kotila, J., Oberstedt, A., and Zuber, K.

Subjects
Particle and Plasma Physics, FOS: Physical sciences, Molecular, Nuclear, Nuclear Experiment (nucl-ex), Nuclear Experiment, Atomic, Nuclear & Particles Physics
Abstract

The gamma-ray emissions from a radiopure cerium-bromide crystal with a mass of 4381 g were measured for a total of 497.4 d by means of high-resolution gamma-ray spectrometry in the HADES underground laboratory at a depth of 500 m.w.e. A search for 0/2nee and 0/2neb+ double beta decay transitions of Ce-136 and Ce-138 was performed using Bayesian analysis techniques. No signals were observed for a total of 35 investigated decay modes. 90% credibility limits were set in the order of 1e18-1e19 a. Existing constraints from a cerium oxide powder measurement were tested with a different cerium compound and half-life limits could be improved for most of the decay modes. The most likely accessible decay mode of the Ce-136 2nee transition into the 0+1 state of Ba-136 results in a new best 90% credibility limit of 5.0e18 a.

Published
2022

22. ReSurvey Germany: vegetation-plot resurvey data from Germany [Dataset]

Author

Jandt, U., Bruelheide, B., Berg, C., Bernhardt-Römermann, M., Blüml, V., Bode, F., Dengler, J., Diekmann, M., Dierschke, H., Doerfler, I., Döring, U., Dullinger, S., Härdtle, W., Haider, S., Heinken, T., Horchler, P., Jansen, F., Kudernatsch, T., Kuhn, G., Lindner, M., Matesanz, S., Metze, K., Meyer, S., Müller, F., Müller, N., Naaf, T., Peppler-Lisbach, C., Poschlod, P., Roscher, Christiane, Rosenthal, G., Rumpf, S.B., Schmidt, W., Schrautzer, J., Schwabe, A., Schwartze, P., Sperle, T., Stanik, N., Stroh, H.-G., Storm, C., Voigt, W., von Heßberg, A., Wagner, E.-R., von Oheimb, G., Wegener, U., Wesche, K., Wittig, B., Wulf, M., Jandt, U., Bruelheide, B., Berg, C., Bernhardt-Römermann, M., Blüml, V., Bode, F., Dengler, J., Diekmann, M., Dierschke, H., Doerfler, I., Döring, U., Dullinger, S., Härdtle, W., Haider, S., Heinken, T., Horchler, P., Jansen, F., Kudernatsch, T., Kuhn, G., Lindner, M., Matesanz, S., Metze, K., Meyer, S., Müller, F., Müller, N., Naaf, T., Peppler-Lisbach, C., Poschlod, P., Roscher, Christiane, Rosenthal, G., Rumpf, S.B., Schmidt, W., Schrautzer, J., Schwabe, A., Schwartze, P., Sperle, T., Stanik, N., Stroh, H.-G., Storm, C., Voigt, W., von Heßberg, A., Wagner, E.-R., von Oheimb, G., Wegener, U., Wesche, K., Wittig, B., and Wulf, M.

Abstract

Long-term analyses of biodiversity data highlight a ‘biodiversity conservation paradox’: biological communities show substantial species turnover over the past century1,2, but changes in species richness are marginal1,3,4,5. Most studies, however, have focused only on the incidence of species, and have not considered changes in local abundance. Here we asked whether analysing changes in the cover of plant species could reveal previously unrecognized patterns of biodiversity change and provide insights into the underlying mechanisms. We compiled and analysed a dataset of 7,738 permanent and semi-permanent vegetation plots from Germany that were surveyed between 2 and 54 times from 1927 to 2020, in total comprising 1,794 species of vascular plants. We found that decrements in cover, averaged across all species and plots, occurred more often than increments; that the number of species that decreased in cover was higher than the number of species that increased; and that decrements were more equally distributed among losers than were gains among winners. Null model simulations confirmed that these trends do not emerge by chance, but are the consequence of species-specific negative effects of environmental changes. In the long run, these trends might result in substantial losses of species at both local and regional scales. Summarizing the changes by decade shows that the inequality in the mean change in species cover of losers and winners diverged as early as the 1960s. We conclude that changes in species cover in communities represent an important but understudied dimension of biodiversity change that should more routinely be considered in time-series analyses.

Published
2022

23. ReSurveyGermany: Vegetation-plot time-series over the past hundred years in Germany

Author

Jandt, U., Bruelheide, H., Berg, C., Bernhardt-Römermann, M., Blüml, V., Bode, F., Dengler, J., Diekmann, M., Dierschke, H., Doerfler, I., Döring, U., Dullinger, S., Härdtle, W., Haider, S., Heinken, T., Horchler, P., Jansen, F., Kudernatsch, T., Kuhn, G., Lindner, M., Matesanz, S., Metze, K., Meyer, S., Müller, F., Müller, N., Naaf, T., Peppler-Lisbach, C., Poschlod, P., Roscher, Christiane, Rosenthal, G., Rumpf, S.B., Schmidt, W., Schrautzer, J., Schwabe, A., Schwartze, P., Sperle, T., Stanik, N., Stroh, H.-G., Storm, C., Voigt, W., von Heßberg, A., von Oheimb, G., Wagner, E.-R., Wegener, U., Wesche, K., Wittig, B., Wulf, M., Jandt, U., Bruelheide, H., Berg, C., Bernhardt-Römermann, M., Blüml, V., Bode, F., Dengler, J., Diekmann, M., Dierschke, H., Doerfler, I., Döring, U., Dullinger, S., Härdtle, W., Haider, S., Heinken, T., Horchler, P., Jansen, F., Kudernatsch, T., Kuhn, G., Lindner, M., Matesanz, S., Metze, K., Meyer, S., Müller, F., Müller, N., Naaf, T., Peppler-Lisbach, C., Poschlod, P., Roscher, Christiane, Rosenthal, G., Rumpf, S.B., Schmidt, W., Schrautzer, J., Schwabe, A., Schwartze, P., Sperle, T., Stanik, N., Stroh, H.-G., Storm, C., Voigt, W., von Heßberg, A., von Oheimb, G., Wagner, E.-R., Wegener, U., Wesche, K., Wittig, B., and Wulf, M.

Abstract

Vegetation-plot resurvey data are a main source of information on terrestrial biodiversity change, with records reaching back more than one century. Although more and more data from re-sampled plots have been published, there is not yet a comprehensive open-access dataset available for analysis. Here, we compiled and harmonised vegetation-plot resurvey data from Germany covering almost 100 years. We show the distribution of the plot data in space, time and across habitat types of the European Nature Information System (EUNIS). In addition, we include metadata on geographic location, plot size and vegetation structure. The data allow temporal biodiversity change to be assessed at the community scale, reaching back further into the past than most comparable data yet available. They also enable tracking changes in the incidence and distribution of individual species across Germany. In summary, the data come at a level of detail that holds promise for broadening our understanding of the mechanisms and drivers behind plant diversity change over the last century.

Published
2022

24. Measurement of the 225Ac half-life

Author

Pommé, S., Marouli, M., Suliman, G., Dikmen, H., Van Ammel, R., Jobbágy, V., Dirican, A., Stroh, H., Paepen, J., Bruchertseifer, F., Apostolidis, C., and Morgenstern, A.

Published
2012
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28. New limits on double-beta decay of $$^{190}$$ <math> <msup> <mrow></mrow> <mn>190</mn> </msup> </math> Pt and $$^{198}$$ <math> <msup> <mrow></mrow> <mn>198</mn> </msup> </math> Pt

Author

Danevich, F., Hult, M., Junghans, A., Kasperovych, D., Kropivyansky, B., Lutter, G., Marissens, G., Polischuk, O., Romaniuk, M., Stroh, H., Tessalina, S., Tretyak, V., and Ware, B.

Abstract

A search for double-beta decay of $$^{190}$$ 190 Pt and $$^{198}$$ 198 Pt with emission of $$\gamma $$ γ -ray quanta was realized at the HADES underground laboratory with a 148 g platinum sample measured by two ultralow-background HPGe detectors over 8946 h. The isotopic composition of the platinum sample has been measured with high precision using inductively coupled plasma mass spectrometry. New lower limits for the half-lives of $$^{190}$$ 190 Pt relative to different channels and modes of the decays were set on the level of $$\lim T_{1/2}\sim 10^{14}$$ lim T 1 / 2 ∼ 10 14 – $$10^{16}$$ 10 16 year. A possible exact resonant $$0\nu KN$$ 0 ν K N transition to the 1,2 1326.9 keV level of $$^{190}$$ 190 Os is limited for the first time as $$T_{1/2} \ge 2.5 \times 10^{16}$$ T 1 / 2 ≥ 2.5 × 10 16 year. A new lower limit on the double-beta decay of $$^{198}$$ 198 Pt to the first excited level of $$^{198}$$ 198 Hg was set as $$T_{1/2} \ge 3.2\times 10^{19}$$ T 1 / 2 ≥ 3.2 × 10 19 year, one order of magnitude higher than the limit obtained in the previous experiment.

Published
2022

29. Constraints on partial half-lives of 136Ce and 138Ce double electron captures

Author

Lehnert, B., Hult, M., Lutter, G., Marissens, G., Oberstedt, S., Stroh, H., Kotila, J., Oberstedt, A., and Zuber, K.

Subjects
puoliintumisaika, ydinfysiikka
Abstract

The γ-ray emissions from a radiopure cerium-bromide crystal with a mass of 4381 g were measured for a total of 497.4 d by means of high-resolution γ-ray spectrometry in the HADES underground laboratory at a depth of 500 m.w.e. A search for 0/2νεε and 0/2νεβ+ double beta decay transitions of 136Ce and 138Ce was performed using Bayesian analysis techniques. No signals were observed for a total of 35 investigated decay modes. 90% credibility limits were set in the order of 1018–1019 yr. Existing constraints from a cerium oxide powder measurement were tested with a different cerium compound and half-life limits could be improved for most of the decay modes. The most likely accessible decay mode of the 136Ce 2νεε transition into the 0+1 state of 136Ba results in a new best 90% credibility limit of 5.0×1018 yr. peerReviewed

Published
2022

30. New limits on double-beta decay of $$^{190}$$Pt and $$^{198}$$Pt

Author

Danevich, F. A., primary, Hult, M., additional, Junghans, A., additional, Kasperovych, D. V., additional, Kropivyansky, B. N., additional, Lutter, G., additional, Marissens, G., additional, Polischuk, O. G., additional, Romaniuk, M. V., additional, Stroh, H., additional, Tessalina, S., additional, Tretyak, V. I., additional, and Ware, B., additional

Published
2022
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32. The cross-sections for the $$^{187}$$Re(n,p)$$^{187}$$W and $$^{185}$$Re(n,3n)$$^{183}$$Re reactions in the energy range between 13.08 MeV and 19.50 MeV

Author

Ilić, S., primary, Jovančević, N., additional, Daraban, L., additional, Stroh, H., additional, Oberstedt, S., additional, Hult, M., additional, Bonaldi, C., additional, Geerts, W., additional, Hambsch, F.-J., additional, Lutter, G., additional, Marissens, G., additional, Vidali, M., additional, and Knežević, D., additional

Published
2020
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33. New limits on double-beta decay of 190Pt and 198Pt.

Author

Danevich, F. A., Hult, M., Junghans, A., Kasperovych, D. V., Kropivyansky, B. N., Lutter, G., Marissens, G., Polischuk, O. G., Romaniuk, M. V., Stroh, H., Tessalina, S., Tretyak, V. I., and Ware, B.

Subjects
INDUCTIVELY coupled plasma mass spectrometry, NEUTRINOLESS double beta decay, PLATINUM isotopes, GERMANIUM radiation detectors
Abstract

A search for double-beta decay of 190 Pt and 198 Pt with emission of γ -ray quanta was realized at the HADES underground laboratory with a 148 g platinum sample measured by two ultralow-background HPGe detectors over 8946 h. The isotopic composition of the platinum sample has been measured with high precision using inductively coupled plasma mass spectrometry. New lower limits for the half-lives of 190 Pt relative to different channels and modes of the decays were set on the level of lim T 1 / 2 ∼ 10 14 – 10 16 year. A possible exact resonant 0 ν K N transition to the 1,2 1326.9 keV level of 190 Os is limited for the first time as T 1 / 2 ≥ 2.5 × 10 16 year. A new lower limit on the double-beta decay of 198 Pt to the first excited level of 198 Hg was set as T 1 / 2 ≥ 3.2 × 10 19 year, one order of magnitude higher than the limit obtained in the previous experiment. [ABSTRACT FROM AUTHOR]

Published
2022
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36. Absolute and relative measurement of the 243Am half-life.

Author

Marouli, M., Pommé, S., Jobbágy, V., Stroh, H., Van Ammel, R., Fankhauser, A., Jakopič, R., Richter, S., Aregbe, Y., Crozet, M., Maillard, C., Rivier, C., and Roudil, D.

Subjects
MASS spectrometry, ISOTOPE dilution analysis, REFERENCE sources, MEASUREMENT, ISOTOPES
Abstract

The half-life of 243Am has been measured by an absolute and a relative method, i.e. by determining the specific activity of 243Am and the specific activity ratio with 241Am. A mixed 241,243Am reference material was produced and certified for its americium mass content and its isotope amount ratios. The characterisation of the mass content of 243Am was established by isotope dilution mass spectrometry using an 241Am spike, produced from highly enriched 241Pu material. The isotope amount ratios n(241Am)/n(243Am) and n(242mAm)/n(243Am) were measured by thermal ionisation mass spectrometry. Activity measurements were performed by alpha-particle counting at a defined solid angle, as well as high-resolution alpha-particle spectrometry. From the 243Am/241Am activity and isotopic amount ratios, a value of 16.988 (24) was derived for the 243Am/241Am half-life ratio. Using a value of 432.6 (6) a for the 241Am half-life, the corresponding 243Am half-life value, 7349 (15) a, is in good agreement with the result obtained from the absolute method, 7342 (14) a. The mean value, 7345 (14) a, agrees well with data from literature and lowers the relative standard uncertainty to 0.2%. [ABSTRACT FROM AUTHOR]

Published
2020
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37. Evidence against solar influence on nuclear decay constants

Author

Pommé, S., Stroh, H., Paepen, J., Van Ammel, R., Marouli, M., Altzitzoglou, T., Hult, M., Kossert, K., Nähle, O., Schrader, H., Juget, F., Bailat, C., Nedjadi, Y., Bochud, F., Buchillier, T., Michotte, C., Courte, S., van Rooy, M.W., van Staden, M.J., Lubbe, J., Simpson, B.R.S., Fazio, A., De Felice, P., Jackson, T.W., Van Wyngaardt, W.M., Reinhard, M.I., Golya, J., Bourke, S., Roy, T., Galea, R., Keightley, J.D., Ferreira, K.M., Collins, S.M., Ceccatelli, A., Unterweger, M., Fitzgerald, R., Bergeron, D.E., Pibida, L., Verheyen, L., Bruggeman, M., Vodenik, B., Korun, M., Chisté, V., and Amiot, M.-N.

Published
2016
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40. Is decay constant?

Author

Pommé, S., primary, Stroh, H., additional, Altzitzoglou, T., additional, Paepen, J., additional, Van Ammel, R., additional, Kossert, K., additional, Nähle, O., additional, Keightley, J.D., additional, Ferreira, K.M., additional, Verheyen, L., additional, and Bruggeman, M., additional

Published
2018
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45. On decay constants and orbital distance to the Sun—part III: beta plus and electron capture decay

Author

Pommé, S, primary, Stroh, H, additional, Paepen, J, additional, Van Ammel, R, additional, Marouli, M, additional, Altzitzoglou, T, additional, Hult, M, additional, Kossert, K, additional, Nähle, O, additional, Schrader, H, additional, Juget, F, additional, Bailat, C, additional, Nedjadi, Y, additional, Bochud, F, additional, Buchillier, T, additional, Michotte, C, additional, Courte, S, additional, van Rooy, M W, additional, van Staden, M J, additional, Lubbe, J, additional, Simpson, B R S, additional, Fazio, A, additional, De Felice, P, additional, Jackson, T W, additional, Van Wyngaardt, W M, additional, Reinhard, M I, additional, Golya, J, additional, Bourke, S, additional, Roy, T, additional, Galea, R, additional, Keightley, J D, additional, Ferreira, K M, additional, Collins, S M, additional, Ceccatelli, A, additional, Verheyen, L, additional, Bruggeman, M, additional, Vodenik, B, additional, Korun, M, additional, Chisté, V, additional, and Amiot, M-N, additional

Published
2016
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46. On decay constants and orbital distance to the Sun—part I: alpha decay

Author

Pommé, S, primary, Stroh, H, additional, Paepen, J, additional, Van Ammel, R, additional, Marouli, M, additional, Altzitzoglou, T, additional, Hult, M, additional, Kossert, K, additional, Nähle, O, additional, Schrader, H, additional, Juget, F, additional, Bailat, C, additional, Nedjadi, Y, additional, Bochud, F, additional, Buchillier, T, additional, Michotte, C, additional, Courte, S, additional, van Rooy, M W, additional, van Staden, M J, additional, Lubbe, J, additional, Simpson, B R S, additional, Fazio, A, additional, De Felice, P, additional, Jackson, T W, additional, Van Wyngaardt, W M, additional, Reinhard, M I, additional, Golya, J, additional, Bourke, S, additional, Roy, T, additional, Galea, R, additional, Keightley, J D, additional, Ferreira, K M, additional, Collins, S M, additional, Ceccatelli, A, additional, Verheyen, L, additional, Bruggeman, M, additional, Vodenik, B, additional, Korun, M, additional, Chisté, V, additional, and Amiot, M-N, additional

Published
2016
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47. On decay constants and orbital distance to the Sun—part II: beta minus decay

Author

Pommé, S, primary, Stroh, H, additional, Paepen, J, additional, Van Ammel, R, additional, Marouli, M, additional, Altzitzoglou, T, additional, Hult, M, additional, Kossert, K, additional, Nähle, O, additional, Schrader, H, additional, Juget, F, additional, Bailat, C, additional, Nedjadi, Y, additional, Bochud, F, additional, Buchillier, T, additional, Michotte, C, additional, Courte, S, additional, van Rooy, M W, additional, van Staden, M J, additional, Lubbe, J, additional, Simpson, B R S, additional, Fazio, A, additional, De Felice, P, additional, Jackson, T W, additional, Van Wyngaardt, W M, additional, Reinhard, M I, additional, Golya, J, additional, Bourke, S, additional, Roy, T, additional, Galea, R, additional, Keightley, J D, additional, Ferreira, K M, additional, Collins, S M, additional, Ceccatelli, A, additional, Verheyen, L, additional, Bruggeman, M, additional, Vodenik, B, additional, Korun, M, additional, Chisté, V, additional, and Amiot, M-N, additional

Published
2016
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49. Lessons learned from nuclear decay data measurements in the european metrology research programme 'MetroFission' (June 2013)

Author

Pomme, S., Loidl, Martin, García-Torano, E., Marouli, M., Le Bret, Cindy, Crespo, M.T., Paepen, J., Mougeot, Xavier, Jobbágy, V., Rodrigues, Matias, van Ammel, R., Stroh, H., Luca, A., JRC Institute for Reference Materials and Measurements [Geel] (IRMM), European Commission - Joint Research Centre [Geel] (JRC), Laboratoire National Henri Becquerel (LNHB), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), IFIN-HH, European Project: ENG08,MetroFission, Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département d'instrumentation Numérique (DIN (CEA-LIST)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)

Subjects
alpha spectrometry, beta-ray spectroscopy, beta spectra shape, Index Terms-alpha spectrometry, alpha-particle spectra, Detectors, alpha-particle spectroscopy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], magnet, Magnetometers, 238U alpha-particle emission probabilities, metrology, high-precision measurements, cryogenic detector, source preparation, exchange effect, coincidence, ionizing radiations, nuclear decay data measurements, beta spectrometry, Distortion measurement, Gold, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Energy resolution, Materials
Abstract

Nuclear decay data measurements were performed in the frame of a EURAMET project. Two specific goals were addressed: (1) High-precision measurements of 238U alpha-particle emission probabilities and (2) experimental characterization of the shape of beta spectra using cryogenic detectors. In the paper, specific lessons learned from the metrological work are highlighted. This includes effects of source preparation on the quality of alpha and beta spectrometry, the influence of exchange effects on beta spectra and the use of a magnet system to eliminate coincidence effects by conversion electrons in alpha-particle spectra., JRC.D.4-Standards for Nuclear Safety, Security and Safeguards

Published
2013

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