re: AW: no reference given

["'Harry J. Newman, CHP'" <hnewman@nextep.cc>]

Sorry Franz

The original has been deleted from my machine.  The question pertained to the usage of lab reported calibration efficiencies for detectors and was non-specific.  I did not realize I had not included the original email.  Perhaps Darin can oblige.

Harry

 

> Thank you for your message. I guess that many recipients of RADSAFE

would have appreciated your message even more if you had given it a

reference.



Franz



Fra nz Schoenhofer

PhD, MR iR

Habicherg. 31/7

A-1160 Vienna

AUSTRIA

phone -43-0699-1168-1319





> -----Ursprüngliche Nachricht-----

> Von: owner-radsafe@list.vander bilt.edu

[mailto:owner- > radsafe@list.vanderbilt.e du] Im Auftrag von Harry J. Newman, CHP > Gesendet: Dienstag, 04. Jänner 2005 18:31 > An: darin.j.mceleney@usace.ar my.mil > Cc: radsafe@list.vanderbilt.e du > Betreff: > > Darin > This subject is an issue that is important due to the fact that labs don't > always measure efficiency in the same way, or in the same way you will be > doing your measurements. Examples of differences include geometry, > backing materials (important for beta), matrix (attenuation), etc. You > don't say exactly what your application is, but it is very important to > understand the physics of what you are doing and the procedure the lab > uses to determine efficiency if you really want quantification. For > example, there are edge effects on detectors that may need to be > considered. I seem to recall some discussion of these issues in some of > the MARSSIM related NUREGS. From my standpoint, doing your own efficiency > calcs is preferred to using those of others, provided you have appropriate > standards. This way you have complete control over the process and > interpretation of the results. > If you are really interested give me a call and we can discuss. > > Regards, > Harry > > Harry J. Newman, CHP > Principal/Technical Director > NEXTEP Environmental, Inc. > 808 Lyndon Lane, Ste. 201 > Louisville, KY 40222 > (502) 339-9767 > (502) 339-9275 (fax) > (502) 777-2857 (cell) > hnewman@nextep.cc< /A> > > > --------------------------------------- -------------------------- > NOTICE: This electronic mail transmission is for the use of the named > individual or entity to which it is directed and may contain information > that is privileged or confidential. It is not to be transmitted to or > received by anyone other than the named addressee (or a person authorized > to > deliver it to the named addressee). It is not to be copied or forwarded > to > any unauthorized persons. If you have received this electronic mail > transmission in error, delete it from your system without copying or > forwarding it, and notify the sender of the error by replying via email or > by calling NEXTEP Environmental, Inc. at (502) 339-9767 (collect), so that > our > address record can be corrected. Thank You. > --------------------------------------- -------------------------- > * *************************************** ******************************** > ; You are currently subscribed to the Radsafe mailing list. To > unsubscribe, send an e-mail to Majordomo@list.vanderbilt .edu Put the > text "unsubscribe radsafe" (no quote marks) in the body of the e-mail, > with no subject line. You can view the Radsafe archives at > http://www.vanderbilt.edu /radsafe/ < Harry J. Newman, CHP Principal/Technical Director NEXTEP Environmental, Inc. 808 Lyndon Lane, Ste. 201 Louisville, KY 40222 (502) 339-9767 (502) 339-9275 (fax) (502) 777-2857 (cell) hnewman@nextep.cc< /A> ------------------------ --------------------------------------- -- NOTICE: This electronic mail transmission is for the use of the named individual or entity to which it is directed and may contain information that is privileged or confidential. It is not to be transmitted to or received by anyone other than the named addressee (or a person authorized to deliver it to the named addressee). It is not to be copied or forwarded to any unauthorized persons. If you have received this electronic mail transmission in error, delete it from your system without copying or forwarding it, and notify the sender of the error by replying via email or by calling NEXTEP Environmental, Inc. at (502) 339-9767 (collect), so that our address record can be corrected. Thank You. ------------------------------- ---------------------------------- ----------------------- Original Message ----------------------- From: Franz Schönhofer To: "'Harry J. Newman, CHP'" , &nb sp; Date: Wed, 5 Jan 2005 01:33:41 +0100 Subject: AW: no reference given Thank you for your message. I guess that many recipients of RADSAFE would have appreciated your message even more if you had given it a reference. Franz Franz Schoenhofer PhD, MR iR Habicherg. 31/7 A-1160 Vienna AUSTRIA phone -43-0699-1168-1319 > -----Ursprüngliche Nachricht----- > Von: owner-radsafe@list.vanderbilt.edu [mailto:owner- > radsafe@list.vanderbilt.edu] Im Auftrag von Harry J. Newman, CHP > Gesendet: Dienstag, 04. Jänner 2005 18:31 > An: darin.j.mceleney@usace.army.mil > Cc: radsafe@list.vanderbilt.edu > Betreff: > > Darin > This subject is an issue that is important due to the fact that labs don't > always measure efficiency in the same way, or in the same way you will be > doing your measurements. Examples of differences include geometry, > backing materials (important for beta), matrix (attenuation), etc. You > don't say exactly what your application is, but it is very important to > understand the physics of what you are doing and the procedure the lab > uses to determine efficiency if you really want quantification. For > example, there are edge effects on detectors that may need to be > considered. I seem to recall some discussion of these issues in some of > the MARSSIM related NUREGS. From my standpoint, doing your own efficiency > calcs is preferred to using those of others, provided you have appropriate > standards. This way you have complete control over the process and > interpretation of the results. > If you are really interested give me a call and we can discuss. > > Regards, > Harry > > Harry J. Newman, CHP > Principal/Technical Director > NEXTEP Environmental, Inc. > 808 Lyndon Lane, Ste. 201 > Louisville, KY 40222 > (502) 339-9767 > (502) 339-9275 (fax) > (502) 777-2857 (cell) > hnewman@nextep.cc > > > --------------------------------------- -------------------------- > NOTICE: This electronic mail transmission is for the use of the named > individual or entity to which it is directed and may contain information > that is privileged or confidential. It is not to be transmitted to or > received by anyone other than the named addressee (or a person authorized > to > deliver it to the named addressee). It is not to be copied or forwarded > to > any unauthorized persons. If you have received this electronic mail > transmission in error, delete it from your system without copying or > forwarding it, and notify the sender of the error by replying via email or > by calling NEXTEP Environmental, Inc. at (502) 339-9767 (collect), so that > our > address record can be corrected. Thank You. > --------------------------------------- -------------------------- > *************************************** ********************************* > You are currently subscribed to the Radsafe mailing list. To > unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu Put the > text "unsubscribe radsafe" (no quote marks) in the body of the e-mail, > with no subject line. You can view the Radsafe archives at > http://www.vanderbilt.edu/radsafe/ ************************************************************************ You are currently subscribed to the Radsafe mailing list. To unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu Put the text "unsubscribe radsafe" (no quote marks) in the body of the e-mail, with no subject line. You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/