University of Maryland
Computer & Space Science Building, Room 2400
4:30 PM Monday, February 4, 2008
Coffee, Tea & Cookies 4:15-4:30 PM
Michael A. Coplan
University of Maryland
A New Way of Detecting Neutrons, Atomic and Nuclear Physics Meet
Neutrons were discovered 75 years ago, but the detection of these fundamental constituents of matter remains difficult and inefficient. Reliable, efficient, and robust neutron detectors are a high priority for the the detection of illicit nuclear materials as well as for the new applied and fundamental neutron science facilities that are being commissioned. A new kind of neutron detector that overcomes the limitations of current detectors will be discussed. The detector uses the reaction of thermal neutrons with 3He to produce several tens of Lyman alpha vacuum ultraviolet (120 nm) photons for every neutron reacted. A complete understanding of the photon production requires detailed consideration of the initial nuclear reaction as well as the subsequent charge exchange and electronic excitation collision processes.
Sponsored by: Department of Physics
and the Institute for Physical Science and Technology, University of Maryland. For information
call Debbie Jenkins at (301) 405-4780 or go to the UMD Space Physics group seminar web site.
For free parking please park in lot DD or anywhere on levels 1-2 in lot B (the big parking garage) after 4:00 pm.
Make sure that you park in a spot WITHOUT a parking meter. More parking information is at the seminar website.