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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
PR: American Nuclear Society welcomes Senate confirmation of Ted Garrish as the DOE’s nuclear energy secretary
Washington, D.C. — The American Nuclear Society (ANS) applauds the U.S. Senate's confirmation of Theodore “Ted” Garrish as Assistant Secretary for Nuclear Energy at the U.S. Department of Energy (DOE).
“On behalf of over 11,000 professionals in the fields of nuclear science and technology, the American Nuclear Society congratulates Mr. Garrish on being confirmed by the Senate to once again lead the DOE Office of Nuclear Energy,” said ANS President H.M. "Hash" Hashemian.
Baojun Liu, Diego Alvarez-Ossa, Nazir P. Kherani, Stefan Zukotynski, Kevin P. Chen
Fusion Science and Technology | Volume 54 | Number 2 | August 2008 | Pages 631-634
Technical Paper | Process Applications | doi.org/10.13182/FST08-A1894
Articles are hosted by Taylor and Francis Online.
A smoke and particle ionization detector using tritiated amorphous silicon film as the radiation source is demonstrated. The ion chamber design includes both bipolar and unipolar region; the unipolar region is defined as the volume space extending beyond the range of ionizing particles. Attachment of ions to particulate matter in the unipolar region considerably reduces the mobility of the carriers, thus forming a space charge cloud accompanied by a reduction in the electrical field strength, thereby enhancing the particulate detection responsivity. Tritium s have a maximum range of about 6 mm in air, which makes the detector compact. Owing to the potential of increased specific activity, it results in a gamma-free detector with improved sensitivity. The results show that this gamma-free detector is several-fold to forty-fold more responsive than traditional ionization detectors using Am-241. In addition, this ion chamber can function as a dual detector having both photoelectric and ionization detector responsivities.