home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!sun-barr!cs.utexas.edu!usc!usc!not-for-mail
- From: merlin@neuro.usc.edu (merlin)
- Newsgroups: sci.physics
- Subject: Li6D and U238 cross section data
- Date: 13 Sep 1992 02:09:04 -0700
- Organization: University of Southern California, Los Angeles, CA
- Lines: 29
- Message-ID: <18v0fgINNj3p@neuro.usc.edu>
- NNTP-Posting-Host: neuro.usc.edu
-
- It's been too many years since I last looked at this data -- but I've
- managed to get into an arguement with a friend about my thermonuclear
- device design. Basically, it's a fission device set next to a hollow
- 3.5 inch thick U-238 ellipsoid filled with Lithium-6 Deuteride. His
- claim is over half of the neutrons from a fission primary device will
- not reach the second U-238 wall of the ellipsoid and as a consequence
- the Li6D (or +n ==> T-D) will squirt out the far side of the device.
- This is not what I recall from my early numerical model of the device
- -- but it's been years -- and I don't have time to go back & dig out
- the old cross section data & codes. Let's assume something like 1MeV
- neutrons are emitted from the primary fission device -- I don't even
- remeber whether this is correct -- but I do recall the primary fission
- neutrons were much softer than the 14.5 MeV neutrons from the fusion
- secondary device. The U-238 ellipsoid is roughly 18" outer diameter
- and perhaps 16' overall length. We could assume a 16' sphere is this
- would simplify matters for answering this question.
-
- Thanks, AJ
-
- ------------------------------------------------------------------------------
- Alexander-James Annala
- Principal Investigator
- Neuroscience Image Analysis Network
- HEDCO Neuroscience Building, Fifth Floor
- University of Southern California
- University Park
- Los Angeles, CA 90089-2520
- ------------------------------------------------------------------------------
-
-