Defense Threat Reduction Agency (DTRA) issues this request for information (RFI) to seek potential sources that are interested in and are qualified to provide the isotopes listed in the attachment to this notice.  This is NOT a solicitation for proposals, proposal abstracts, or quotations.  This notice is for MARKET RESEARCH PURPOSES ONLY, and in no way obligates the United States Government to issue a solicitation or otherwise make a contract award.   Please see the attachment for more information regarding this RFI.