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Experimental Observations of Nuclear Activity in Deuterated Materials Subjected to a Low-Energy Photon BeamExposure of highly deuterated materials to a low-energy (nom. 2 MeV) photon beam resulted in nuclear activity of both the parent metals of hafnium and erbium and a witness material (molybdenum) mixed with the reactants. Gamma spectral analysis of all deuterated materials, ErD2.8+C36D74+Mo and HfD2+C36D74+Mo, showed that nuclear processes had occurred as shown by unique gamma signatures. For the deuterated erbium specimens, posttest gamma spectra showed evidence of radioisotopes of erbium ((163)Er and (171)Er) and of molybdenum ((99)Mo and (101)Mo) and by beta decay, technetium (99mTc and 101Tc). For the deuterated hafnium specimens, posttest gamma spectra showed evidence of radioisotopes of hafnium (180mHf and 181Hf) and molybdenum ((99)Mo and (101)Mo), and by beta decay, technetium ((99m)Tc and (101)Tc). In contrast, when either the hydrogenated or non-gas-loaded erbium or hafnium materials were exposed to the gamma flux, the gamma spectra revealed no new isotopes. Neutron activation materials showed evidence of thermal and epithermal neutrons. CR-39 solid-state nuclear track detectors showed evidence of fast neutrons with energies between 1.4 and 2.5 MeV and several instances of triple tracks, indicating (is) greater than 10 MeV neutrons. Further study is required to determine the mechanism causing the nuclear activity.
Document ID
20170002584
Document Type
Technical Memorandum (TM)
Authors
Steinetz, Bruce M.
(NASA Glenn Research Center Cleveland, OH, United States)
Benyo, Theresa L.
(NASA Glenn Research Center Cleveland, OH, United States)
Pines, Vladimir
(Pinesci Consulting Avon Lake, OH, United States)
Pines, Marianna
(Pinesci Consulting Avon Lake, OH, United States)
Forsley, Lawrence P.
(JWK International Co. Annandale, VA, United States)
Westmeyer, Paul A.
(NASA Headquarters Washington, DC United States)
Chait, Arnon
(NASA Glenn Research Center Cleveland, OH, United States)
Becks, Michael D.
(Vantage Partners, LLC Cleveland, OH, United States)
Martin, Richard E.
(Cleveland State Univ. Cleveland, OH, United States)
Hendricks, Robert C.
(NASA Glenn Research Center Cleveland, OH, United States)
Penney, Nicholas
(Ohio Aerospace Inst. Brook Park, OH, United States)
Marsolais, Annette M.
(Vantage Partners, LLC Cleveland, OH, United States)
Kamm, Tracy R.
(Vantage Partners, LLC Cleveland, OH, United States)
Date Acquired
March 27, 2017
Publication Date
February 1, 2017
Subject Category
Nuclear Physics
Report/Patent Number
E-19122
NASA/TM-2017-218963
GRC-E-DAA-TN28816
Funding Number(s)
CONTRACT_GRANT: NNC14CA16C
WBS: WBS 161682.04.01.01.30
CONTRACT_GRANT: NNC13BA10B
CONTRACT_GRANT: NNC12BA01B
Distribution Limits
Public
Copyright
Public Use Permitted.

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