11-16 July 2022
Europe/Moscow timezone
For authors of online talks: we will send videoconference links 1 day before the session to e-mail addresses specified in the Registration form

THE METHOD AND SET UP FOR THE MEASUREMENT OF DELAYED NEUTRON TEMPORAL CHARACTERISTICS FOR THE FISSION OF HEAVY NUCLEI IN THE COMPLEX PRIMARY NEUTRON FIELDS

12 Jul 2022, 16:10
20m
Физический факультет, СФА

Физический факультет, СФА

Oral talk (15 min + 5 min questions) Experimental and theoretical studies of nuclear reactions

Speaker

Mr Dmitrii Gremyachkin (JSC SSC RF-IPPE)

Description

Present work is dedicated to the description of the set-up designed for precise measurements of the energy dependence of aggregate delayed neutron characteristics in the energy range of primary neutrons from thermal to 20 MeV. The set-up constructed on the base of Tandem-3M accelerator of SSC RF – IPPE consisted of high-efficiency neutron detector, spectrometer of primary neutrons, pneumatic transport system of the sample under investigation, experimental control and data acquisition system. Special emphasis is made to study the influence of the primary neutron flux on performance characteristics of the neutron detector and to the measurements of the primary neutron spectra generated from the reaction D(d,n) on the solid neutron target. The results of measurements of delayed neutron relative abundances and half-lives are presented for the fission of 235U by the neutrons in energy range from 0.42 to 8 MeV, including insufficiently known range from 4 to 8 MeV.

The speaker is a student or young scientist Yes
Section 2. Experimental and theoretical studies of nuclear reactions

Primary author

Mr Dmitrii Gremyachkin (JSC SSC RF-IPPE)

Co-authors

Mr Andrey Egorov (JSC SSC RF-IPPE) Dr Vladimir Piksaikin (JSC SSC RF-IPPE) Mr Konstantin Mitrofanov (JSC SSC RF-IPPE) Mr Vjacheslav Mitrofanov (JSC SSC RF-IPPE)

Presentation Materials