Title :
Search for double beta-decay products of 136Xe in liquid xenon
Author :
Miyajima, M. ; Sasaki, S. ; Tawara, H.
Author_Institution :
Nat. Lab. for High Energy Phys., Ibaraki, Japan
fDate :
8/1/1994 12:00:00 AM
Abstract :
In order to probe the 2ν-mode of the double beta-decay of 136Xe, decay daughters (136Ba) were accumulated under an electric field on the surface of a spherical electrode in a positive ion collector filled with liquid xenon, and were then observed with a time-of-flight mass spectrometer. The positive ion collector was operated for 847 hours using natural liquid xenon of 3 liters. No 136Ba isotopes were detected with the time-of-flight mass spectrometer. However, it was found that a collector electrode made of stainless steel was free from contamination of natural barium isotopes as background
Keywords :
double beta decay; mass spectroscopy; nuclei with mass number 90 to 149; radioisotopes; 136Ba; 136Xe double beta decay; Xe; collector electrode; liquid Xe; positive ion collector; time-of-flight mass spectrometer; two neutrino double beta-decay; Electrodes; Electron emission; Ionization; Isotopes; Laboratories; Mass spectroscopy; Neutrino sources; Probes; Steel; Xenon;
Journal_Title :
Nuclear Science, IEEE Transactions on
