A COMPARATIVE STUDY ON THE GAS-JET TRANSPORTATION METHOD FOR NUCLEAR SPECTROSCOPY MEASUREMENTS

Oct 16, 2020, 4:05 PM
25m
Online

Online

Oral report Section 3. Modern nuclear physics methods and technologies. Section 3. Modern nuclear physics methods and technologies

Speaker

Dimitar Simonovski (1. St.Petersburg State University, Universitetskaya nab. 7/9, St.Petersburg, Russia 2.Petersburg Nuclear Physics Institute of “Kurchatov Research Center”, Gatchina, Russia)

Description

One of the numerous perspective experimental implementations of the high-flux PIK- research reactor in Gatchina (Russian Federation) is connected with high-precision mass spectroscopy measurements, at the future planned facility PITRAP[1], of beta-unstable short-lived exotic nuclides. The study and measurement of the basic physical properties of exotic nuclides far from the line of stability in the chart of nuclides plays a crucial role in solving the astrophysical puzzle regarding the nucleosynthesis paths of the elements heavier than iron[2].
The successful study and detection of such short-lived nuclei is dependent upon their high rates of production and, rapid and highly effective transportation from the production chamber to the spectroscopy measurement setup. As the high-flux PIK-reactor is intended to fulfill the first condition by promising neutron fluxes reaching 1015 n/s/cm2, the rapid gas-jet transportation method is meant to fulfill the last two requirements.
In this work a comparative study of the gas-jet transportation method is presented based upon its successful implementation at the TRIGA-SPEC facility[3] in Mainz (Germany) and IGISOL facility[4] in Jyväskylä (Finland). Based on previous experimental measurements, simulations and mathematical modeling have been done for the purpose of the estimation and comparison of the most important transport parameters studied in both cases: evacuation time, transport time and efficiency of transport. As an addition, ionization and recombination processes of ionized exotic nuclides in gas-cells has been studied, which is important for determining the degree of consideration of plasma effects in the gas flow. A special consideration and suggestions will be presented for the future successful implementation of the gas-jet transportation method in the special case of the PIK-reactor, based on the previously derived conclusions and mathematical apparatus.

  1. Yu.I.Gusev et al. // Atomic Energy (in Russia) 2015. V.118. P.334-340.
  2. E.M.Burbidge et al. // Rev. Mod. Phys. 1957. V.29. P.580.
  3. J.Ketelaer et al. // Nucl. Instrum. Meth. A. 2008. V.594. P.162-177.
  4. J.Äystö // Nucl. Phys. A. 2001. V.693. P.477-494.

Primary author

Dimitar Simonovski (1. St.Petersburg State University, Universitetskaya nab. 7/9, St.Petersburg, Russia 2.Petersburg Nuclear Physics Institute of “Kurchatov Research Center”, Gatchina, Russia)

Co-authors

Iain Moore (University of Jyväskylä) Prof. Yuri Novikov (1. St.Petersburg State University, Universitetskaya nab. 7/9, St.Petersburg, Russia 2.Petersburg Nuclear Physics Institute of “Kurchatov Research Center”, Gatchina, Russia)

Presentation materials