Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup

Johann Isaak; Deniz Savran; Tobias Beck; Udo Gayer; null Krishichayan; Bastian Löher; Norbert Pietralla; Marcus Scheck; Werner Tornow; Volker Werner; Andreas Zilges

doi:10.1051/epjconf/201817803006

Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup

Johann Isaak, Deniz Savran, Tobias Beck, Udo Gayer, Krishichayan, Bastian Löher, Norbert Pietralla, Marcus Scheck, Werner Tornow, Volker Werner, Andreas Zilges

School of Computing, Engineering and Physical Sciences

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

Abstract

One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.

Original language	English
Title of host publication	16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)
Subtitle of host publication	Shanghai, China, September 8-22, 2017
Editors	Yang Sun
Publisher	EDP Sciences
Number of pages	3
Volume	178
DOIs	https://doi.org/10.1051/epjconf/201817803006
Publication status	Published - 16 May 2018

Publication series

Name	EPJ Web of Conferences
Publisher	EDP Sciences
ISSN (Print)	2100-014X

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Isaak, J., Savran, D., Beck, T., Gayer, U., Krishichayan, Löher, B., Pietralla, N., Scheck, M., Tornow, W., Werner, V., & Zilges, A. (2018). Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup. In Y. Sun (Ed.), 16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16): Shanghai, China, September 8-22, 2017 (Vol. 178). Article 03006 (EPJ Web of Conferences). EDP Sciences. https://doi.org/10.1051/epjconf/201817803006

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title = "Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup",

abstract = "One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.",

author = "Johann Isaak and Deniz Savran and Tobias Beck and Udo Gayer and Krishichayan and Bastian L{\"o}her and Norbert Pietralla and Marcus Scheck and Werner Tornow and Volker Werner and Andreas Zilges",

year = "2018",

month = may,

day = "16",

doi = "10.1051/epjconf/201817803006",

language = "English",

volume = "178",

series = "EPJ Web of Conferences",

publisher = "EDP Sciences",

editor = "Yang Sun",

booktitle = "16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)",

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Isaak, J, Savran, D, Beck, T, Gayer, U, Krishichayan, Löher, B, Pietralla, N, Scheck, M, Tornow, W, Werner, V & Zilges, A 2018, Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup. in Y Sun (ed.), 16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16): Shanghai, China, September 8-22, 2017. vol. 178, 03006, EPJ Web of Conferences, EDP Sciences. https://doi.org/10.1051/epjconf/201817803006

Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup. / Isaak, Johann; Savran, Deniz; Beck, Tobias et al.
16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16): Shanghai, China, September 8-22, 2017. ed. / Yang Sun. Vol. 178 EDP Sciences, 2018. 03006 (EPJ Web of Conferences).

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

TY - GEN

T1 - Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup

AU - Isaak, Johann

AU - Savran, Deniz

AU - Beck, Tobias

AU - Gayer, Udo

AU - Krishichayan, null

AU - Löher, Bastian

AU - Pietralla, Norbert

AU - Scheck, Marcus

AU - Tornow, Werner

AU - Werner, Volker

AU - Zilges, Andreas

PY - 2018/5/16

Y1 - 2018/5/16

N2 - One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.

AB - One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.

U2 - 10.1051/epjconf/201817803006

DO - 10.1051/epjconf/201817803006

M3 - Conference contribution

VL - 178

T3 - EPJ Web of Conferences

BT - 16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16)

A2 - Sun, Yang

PB - EDP Sciences

ER -

Isaak J, Savran D, Beck T, Gayer U, Krishichayan, Löher B et al. Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup. In Sun Y, editor, 16th International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS16): Shanghai, China, September 8-22, 2017. Vol. 178. EDP Sciences. 2018. 03006. (EPJ Web of Conferences). doi: 10.1051/epjconf/201817803006

Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup

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