Speaker
Description
The work focuses on the "double-hit" experimental approach in the registration and analysis
of ternary decay events. The double-hit registration approach means that two fragments, with
an open angle between them 5 0 or less, were detected in the same PIN diode during one
registration gate of 200 ns. The series of experiments dedicated to investigation of 242 Pu (ɣ, f)
reaction was performed at the beam of the MT-25 microtron, FLNR, JINR, using the VEGA
(V–E Guide based Array) setup [1]. Fission fragments (FFs) from the (ɣ, f) reactions were
captured by an electrostatic guide system (EGS). The guide is a cylindrical capacitor of four
meters long with a thin wire as a central electrode. Some part of the ions emitted from the
target at one end of the guide become involved in the spiral-like movement along the guide
axis [2] thus transporting to the time-of-flight mass-spectrometer that consists of a
microchannel-plates based timing detector and a mosaic of four PIN diodes.
The revealing of the double-hit events in the data stream, their kinematical analysis, restoring
of the prescission configurations of the decaying system are discussed in the presentation.
References
1. D. V. Kamanin, Yu. V. Pyatkov, A. N. Solodov et al., Physics of Particles and Nuclei
Letters, 2025, Vol. 22, No. 2, pp. 272-275
2. N.C. Oakey, P.D. McFarlane, NIM. 49, 220 (1967).
| Apply for student award at which level: | PhD |
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