Abstract: The characteristic of helium release from titanium tritide target were investigated in ultra-vacuum metal hydride research system. Titanium films were deposited on a molybdenum substrate using a magnetron sputtering process, He-3 analyses were performed by a Quadrupole Mass Spectrometer (QMS).In addition, the standard working curve of leakage for QMS was established. The results show that tritium absorption performance of Titanium films will not be significantly impacted with short time contact atmosphere. And helium release by QMS analysis show that the pressure rising with age due to the tritium decay which comes from the indoor wall absorption. The helium release rate gradually stabilized with aging time and maintained 0.2% to 0.3%, and the pressure is less than 10-3 Pa level. In conclusion, the helium from titanium tritide decay will not affect the neutron generator service time and neutron yield at least less than 535 days storage.
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2019, Vol. 33 
