The double beta decays of Mo-100 and Nd-150 were studied in a time projection chamber located 72 m underground. A 3275 h exposure of a 16.7 g sample of metallic Mo enriched to 97.4 % in Mo-100 resulted in a two-neutrino half-life of (6.82 + 0.38 - 0.53 +/- 0.68) * 10**18 y. Similarly, a 6287 h exposure of 15.5 g of Nd2O3 enriched to 91 % in Nd-150 yielded (6.75 + 0.37 - 0.42 +/- 0.68) * 10**18 y. Lower limits on half-lives for neutrinoless decay with and without majoron emission also have been measured.
@article{arxiv.nucl-ex/9706005,
title = {Double Beta Decays of Mo-100 and Nd-150},
author = {A. De Silva and M. K. Moe and M. A. Nelson and M. A. Vient},
journal= {arXiv preprint arXiv:nucl-ex/9706005},
year = {2008}
}