https://doi.org/10.1051/epjconf/202531806004
Lithium Isotopic Analysis Using ERIAD (Electrospray with in-source collisional atomization)
1 IAI RAS, 31-33, Lit. A, Ivan Chernykh St., St. Petersburg, Russia
2 Ioffe Institute, 26, Polytechnicheskaya, St. Petersburg, Russia
* Corresponding author: gall@ms.ioffe.ru
Published online: 17 February 2025
The paper considers a number of physical processes occurring during electrospraying of analytical solution, ion transport in the ERIAD interface (electrospraying with atomization in the ion source) and in a specialized mass analyzer, and providing analytical characteristics of the device required for lithium isotope analysis. Registration of lithium isotope signals (6Li and 7Li), is carried out simultaneously on a two-channel receiver based on a doublet of microchannel plates. The gas-dynamic interface is constructed according to the Kontorowitz-Gray type scheme; it is gasdynamically "long", i.e. the distance between the nozzle and the skimmer is ~4 times larger than the size of the "Mach barrel" at operating pressure (200 Pa). It is shown that the achieved accuracy of analysis in determining the fraction of 7Li isotope in the mixture is 0.03%, which corresponds to the requirements of technological control in lithium isotope enrichment by homogeneous sorption methods.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
