[ RadSafe ] Fw: tritium measurement via He-3

[Downing, Robert Gregory]

As far as I know Brian Clarke of McMaster University developed the technique:

Clarke, W. B., W. J. Jenkins and Z. Top. 1976. Determination of tritium by mass spectrometric measurement of 3He. Int. J. Appl. Rad. Isotopes 27, pp. 217-225.

Unfortunately Brian is no longer with us and unfortunately I don't know of anyone who has since adopted the technique.  In addition to tritium, we also determined boron and lithium by first irradiating sealed sample in a neutron field.  Then both the He-4 and He-3 were determined after a wait time.  Several articles on the application were published.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
R. Gregory Downing, Ph. D.
Chemical Science Division
National Institute of Standards and Technology
100 Bureau Drive, Stop 8395 / Bldg. 235, Rm. B183
Gaithersburg, MD 20899-8395

Desk: (301) 975-3782 /Email: downing at nist.gov


-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Franz Schönhofer
Sent: Thursday, February 21, 2013 3:19 PM
To: The International Radiation Protection (Health Physics) MailingList; Kovács Tibor
Subject: [ RadSafe ] Fw: tritium measurement via He-3




RADSAFErs,

I received a request from a Hungarian collegue, whether I know a laboratory, which measures tritium via He-3 mass spectrometry. Unfortunately I do not – decades ago I met at a conference a US scientist who worked with that, but this was the only occasion I ever heard about this technique.

Taking into consideration the combined wisdom on RADSAFE I trust someone would know a laboratory! You may respond to me or directly to Tibor at kt at almos.vein.hu. Thank you!

Franz
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