DOC; Mountain Administrative Support Center; Acquisition Management Division; 325 Broadway MC3; Boulder, CO

66 -- REPLACEMENT SOURCE CELL FOR MOLECULAR BEAM EPITAXI SYSTEM SOL NB815040704075 POC Doris Turner, Purchasing Agent, (303) 497-3872 E-MAIL: NOAA; MASC Acquisition Management, Joyce.J.Mills@noaa.gov. The National Institute of Standards and Technology (NIST) has a requirement for a replacement source cell for the existing Molecular Beam Epitaxi system manufactured by EPI MBE Products Group. The effusion cell must include the following technical features: 1) capacity of 500 cc or greater, 2) valved arsenic cracking, 3) demonstrated uniformity of plus or minus 1.0% over a 3-inch diameter substrate in an EPI 930 MBE system 4) 4.5-inch outer diameter Conflat mounting flange 5) In-vacuum cell length of 12.5 inches, 6) needle valve in high temperature cracking zone to provide highly reproducible manual flux control and rapid shut-off without obstruction, 7) Molybdenum-free and quartz-free construction; electronic grade tantalum and reagent grade PBN construction, 8) demonstrated GaAs Hall mobility greater than 1 million at 4K, 9) optional automated valve positioner with a servomotor driver with guaranteed compatibility with our existing EPI 930 MBE system control hardware and software, 10) fully bakeable, screw-on power connectors compatible with EPI 930 electronics, and 11) bakeable to 1600 degrees C. Delivery is required by February 27, 1997. Interested sources proposing to supply an equivalent item must submit a written qualification statement clearly establishing capability to meet the above requirements within 15 days from the date of this synopsis. In the absence of other qualified sources, it is the intent of the Government to negotiate a sole source contract under the authority of 41 U.S.C. 253(c)(1) to EPI MBE Products Group, 1290 Hammond Road, St. Paul, MN 55110 as this source is considered to be the only responsible source and no other item will satisfy agency requirements. No formal RFQ is available. All interested parties must respond by January 30, 1997. (0009)

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