Veteran radiochemist to discuss weapon test diagnostics in classified colloquium Wednesday

A key figure in radiochemistry for the past 47 years will talk about Los Alamos' central role in the radiochemical analysis of nuclear tests at a Classified Director's Colloquium on Wednesday.

Don Barr of Isotope and Nuclear Chemistry (C-INC), who spent 34 years on staff and 13 years as an associate contributing to research efforts in radiochemistry, will speak on "Radiochemistry as a Nuclear Weapons Diagnostic" at 1:10 p.m., in the Administration Building Auditorium at Technical Area 3.

Barr's talk is classified at the Secret/Restricted Data/No Foreign Nationals level and is open to Q-cleared U.S. citizens. All attendees must have sigmas 1-10 assigned by line management. To register for the colloquium and others in the classified colloquium series, write to the Security Help Desk at security@lanl.gov by electronic mail and include name, Z number, group, e-mail address and phone number.

For more information, see Monday's Daily Newsbulletin.

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