Specialized mass spectrometer for determining the isotopic composition of lithium by ERIAD (electrospray with in source atomization)

A specialized isotope mass spectrometer for determining the isotopic ratio of lithium by ERIAD (electrospray with atomization in an ion source) is described. The device uses a Mattuha-Herzog-type analyzer double focusing to use beams large spread energy and simultaneous registration signals both isotopes ( 6 Li 7 Li), two-channel receiver based on doublet microchannel plates. gas-dynamic interface built according Kontorowitz-Gray scheme; from point view, it "long", that is, distance between nozzle skimmer 4 times size "Mach barrel" at operating pressure (200 Pa). desktop, its weight does not exceed 20 kg. measurement time 1000 s, sample replacement 100 accuracy ~ 0.1%. Keywords: spectrometry, electrospray, source, lithium.