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Published: 2019-09-15
Abstract Views: 61
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DOI: https://doi.org/10.53747/jnst.v9i3.42
Issue
Vol. 9 No. 3 (2019)
Section
Articles
How to Cite
D., C., L., C., A.J., K., D.L., B., P., C., M., C., J., G., & A., O. (2019). High-resolution fission studies with the planned GBS facility at ELI-NP. Nuclear Science and Technology, 9(3), 30-37. https://doi.org/10.53747/jnst.v9i3.42

High-resolution fission studies with the planned GBS facility at ELI-NP

D. Choudhury1,2, L. Csige3, A.J. Krasznahorkay3, D.L. Balabanski2, P. Constantin2, M. Csatlós3, J. Gulyás3, A. Oberstedt2
1 Department of Physics, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
2 Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Bucharest-Magurele 077125, Romania
3 Institute of Nuclear Research, Hungarian Academy of Sciences, Debrecen 4026, Hungary

Main Article Content

Abstract

The emerging photo-fission experimental campaigne with the gamma beam system at ELI-NP is presented along with the physics cases to be addressed, with emphasis on prepared day-one experiments. The design of the state-of-the-art detector arrays, which are under construction for such experiments, is reported. The results of the performance tests of the constructed prototypes are presented. Plans for further extension of the photo-fission experimental programme at ELI-NP are discussed.

Article Details

Keywords

photo-fission, fission barrier, transmission resonance, GBS, ELI-NP, fission detectors

References

[1]. S.M. Polikanov et al., Production of nuclei with an anomalous spontaneous fission period in reactions involving heavy ions, Soviet. Phys. JETP 17, 544-546, 1962.
[2]. V.M. Strutinsky, Shell effects in nuclear masses and deformation energies, Nucl. Phys. A 95, 420-442, 1967.
[3]. B.B. Back et al., Subbarrier fission resonances in Th isotopes, Phys. Rev. Lett. 28, 1707-1710, 1972.
[4]. P. Moller, S.G. Nilsson and R.K. Sheline, Octupole deformations in the nuclei beyond 208Pb, Phys. Lett. B 40, 329-332, 1972.
[5]. S. Cwiok et al., Hyperdeformations and clustering in the actinide nuclei, Phys. Lett. B 322, 304-310, 1994.
[6]. A. Krasznahorkay et al., Experimental evidence for hyperdeformed states in U isotopes, Phys. Rev. Lett. 80, 2073, 1998.
[7]. L. Csige et al., Exploring the multihumped fission barrier of 238U via sub-barrier photofission, Phys. Rev. C 87, 04432 1-5, 2013.
[8]. P. Jachimowicz, M. Kowal and J. Skalski, Eight-dimensional calculations of the third barrier in 232Th, Phys. Rev. C 87, 044308 1-4, 2013.
[9]. M. Kowal, J. Skalski, Examination of the existance of third, hyperdeformed minima in actinide nuclei, Phys. Rev. C 85, 061302(R) 1-4, 2012.
[10]. Krasznahorkay, “Handbook of Nuclear Chemistry” vol. 1, editors A. Vertes et al., Springer Verlag, Berlin, p. 281-318, 2011.
[11]. P.G. Thirolf and D. Habs, Spectroscopy in the second and third minimum of actinide nuclei, Prog. Part. Nucl., Phys. 49, 325-402, 2002.
[12]. G. Bellia et al., Towards a better understanding of deep subthreshold photofission of 238U, Z. Phys. A 314, 43-47, 1983.
[13]. C.D. Bowman et al., Subthreshold photofission of 238U and 232Th, Phys. Rev. C 17, 1086-1088, 1978.
[14]. P.A. Dickey and P. Alex, 238U and 232Th photofission and photoneutron emission near threshold, Phys. Rev. Lett. 35, 501-504, 1975.
[15]. J.W. Knowles et al., A high-resolution measurement of the photofission spectrum of 232Th near threshold, Phys. Lett. 116B, 315-219, 1982.
[16]. R. Vandenbosch and J. Huizenga, Nuclear Fission, Academic Press, New York, 1973.
[17]. C. Wagemans, The Nuclear Fission Process, CRC Press, Boca Raton, 1991.
[18]. D. Savran et al., The low-energy photon tagger NEPTUN, Nucl. Instrum. Methods A 613, 232, 2010.
[19]. N.V. Zamfir, Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Nucl. Phys. News 25:3, 34-38, 2015.
[20]. O. Adriani et al., Technical Design Report EuroGammaS proposal for the ELI-NP Gamma beam System, arXiv:1407.3669v1 [physics.acc-ph].
[21]. D.L. Balabanski et al., Photofission experiments at ELI-NP, Rom. Rep. Phys. 68, S621-S698, 2016.
[22]. D.L. Balabanski et al., Gamma-beam photofission experiments at ELI-NP: The future is emerging, EPJ Web of Conf. 193, 14005 1-4, 2018.
[23]. C.K. Shalem et al., Advances in thick GEM-like gaseous electron multipliers. Part II: Low-pressure operation, Nucl. Instr. Meth. A 258, 468-474, 2006.
[24]. C. Budtz-Jorgensen et al., A twin ionization chamber for fission fragment detection, Nucl. Instr. Meth. A 258, 209-220, 1987.
[25]. D. Choudhury et al., Prospectives of photofission studies with high-brilliance narrow-width gamma beams at the new ELI-NP facility, Acta Phys. Polonica B 48, 559-564, 2017.
[26]. W. Neubert, Bragg curve spectroscopy of fission fragments by using parallel plate avalanche counters, Nucl. Instr. Meth. A 21, 535-542, 1987.
[27]. D. Choudhury et al., High-resolution photofission studies with the gamma beam system at ELI-NP, AIP Conf. Proc. 1852, 070003 1-5, 2017.
[28]. ROOT Data Analysis Framework, http://root.cern.ch, 2014.
[29]. C.A. Ur et al., Nuclear resonance fluorescence experiments at ELI-NP, Rom. Rep. Phys. 68, S483–S538, 2016.
[30]. F. Camera et al., Gamma above the neutron threshold experiments at ELI-NP, Rom. Rep. Phys. 68, S539–S619, 2016.