Abstract
Bremsstrahlung from tritium–rare-gas mixtures enclosed in low-permeability glass bulbs has been observed with a Si(Li) detector. The end point of the x-ray spectrum, 18 556(6) eV, implies a He atomic-mass difference of 18 595(6) eV.
- Received 4 September 1991
DOI:https://doi.org/10.1103/PhysRevLett.67.2626
©1991 American Physical Society