National Institute of Standards & Technology, Acquisition & Assistance Div.,100 Bureau Drive Stop 3572, Bldg. 301, Rm B117, Gaithersburg, MD 20899-3572

B -- MEASUREMENT OF RARE EARTH SPECTRA SOL 53SBNB967033 DUE 020899 POC Nick Nichols, Contract Specialist (301) 975-6333, FAX (301) 963-7732 WEB: NIST Contracts Homepage, http://www.nist.gov/admin/od/contract.htm. E-MAIL: NIST Contracts Office, Contract@nist.gov. The National Institute of Standards and Technology (NIST) intends to negotiate with Harvard University, Office for Sponsored Research, on a sole-source basis to complete the table of transition probabilities of lines from odd-parity levels in Dy I and Dy II. Also to obtain spectra of single isotopes of Dy in order to determine the 162-164 isotope splitting of Dy I and Dy II energy levels. Additionally, measure branching fractions in Holmium I and Ho II to give transition probabilities and modify existing computer programs to enable analysis completion. Deliverables will include: (1) complete table of dysprosium branching fractions and transition probabilities for spectral lines from odd-parity levels in Dy I and Dy II. (2) Make observations of hollow cathode lamps containing the single isotope 162 Dy and 164 Dy using the NIST FTS. Analyze the resulting spectra to obtain the isotope splitting for energy levels in Dy I and Dy II. (3) Begin observations of holmium (Ho) hollow cathode lamps using the NIST FTS. Modify existing software as necessary to analyze the spectra. This acquisition is to be accomplished under the authority of FAR 13.106(a)(5) which permits sole source acquisition when only one source is reasonably available. The Harvard group has demonstrated unique qualifying experience with FTS high- resolution spectroscopy and also much experience in completing radiometric calibrations and work on complex atomic spectra. Award to another source would result in substantial duplication of cost to the Government that is not expected to be recovered through competition, and would result in unacceptable delays in fulfilling the agency's requirements. Anticipated period of performance is from the award date through June 30, 1999. This notice is not a request for proposals. However, interested parties may identify their interest and capability to satisfy the Government's requirements not later than the response date above. Capability statements must include documentation of expertise in all areas pertinent to the proposed project. A determination by the Government not to compete this proposed contract based upon responses to this notice is solely within the discretion of the contracting officer. A solicitation document is not available. See numbered Notes 1 and 26. NOTES: 1. This document must be created in Word for Windows for use in CBDNet. 2. A complete list of Classification Codes is on the Internet, reachable at the address: http://cbdnet.access.gpo.gov/class.html 3. The office address in CBDNet is automatic, therefore, any special addresses (other than our standard office address) must be contained in the description. Posted 01/11/99 (W-SN286689). (0011)

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