CERN Accelerating science

Article
Report number	JINR-E7-2000-83
Title	RIB Production with Photofission of Uranium
Author(s)	Oganessian, Yu T ; Dmitriev, S N ; Kliman, J ; Maslov, O D ; Starodub, G Ya ; Belov, A G ; Tretyakova, S P
Affiliation	(Flerov Laboratory of Nuclear Reactions, Dubna)
Publication	2002
Imprint	13 Apr 2000
Number of pages	10
In:	Nucl. Phys. A 701, 1-4 (2002) pp.87-95
In:	5th International Conference on Radioactive Nuclear Beams, Divonne-les-Bains, France, 3 - 8 Apr 2000, pp.87-95
Subject category	Nuclear Physics
Abstract	The process of uranium photofission with electron beams of 20 div 50 MeV is considered in terms of the production of fission fragments. It is shown that in the interaction between an electron beam (25 MeV in energy and 20 mu A in intensity), produced by a compact accelerator of the microtron type, and a uranium target of about 40 g/cm^2 in thickness, an average of 1.5 cdot 10^11 fission events/second is generated. According to the calculations and test experiments, this corresponds to the yield of ^132 Sn and ^142 Xe isotopes of approximately 2 cdot 10^9/s. The results of experiments on the optimal design of the U-target are presented. Problems are discussed connected with the separation of isotopes and isobars for their furher acceleration up to energies of 5-18 MeV/n. The photofission reactions of a heavy nucleus are compared with other methods of RIB production of medium mass nuclei.

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