Key points are not available for this paper at this time.
The J=01 rotational transitions of TCl and TBr have been measured at 1. 36-mm and 1. 74-mm wavelengths, respectively. These measurements, with ₄ and D from infrared data, yield the following constants: For tritium chloride, For tritium bromide, From the TBr measurements and similar measurements on DBr made previously in this laboratory, the mass ratio mₓ ({m₃) }=1. 49747 was obtained.
Burrus et al. (1955) studied this question.