All We have used the standard 9 inch ball for many years, using the E-600 and the ESP-1. One of the big changes has been going from the BF3 to He3 tube at 2 atm which reduces the efficiency.
We have been testing the Ludlum 30-4 which has a smaller diameter ball and a significantly lower weight. I believe Ludlum has some data on their new remball on their website. One of our staff here at LANL Clifford Fell will be presenting an LA-UR on the Ludlum detector at the next HPIC meeting which will be sometime in April this year in Las Vegas. I have been carrying a 9 inch ball with the PNR-4 since 1967 and I would really like to get something lighter. Tom From: Powernet <[email protected]> On Behalf Of Robinson, Brent via Powernet Sent: Thursday, February 28, 2019 9:50 AM To: [email protected] Cc: Robinson, Brent <[email protected]> Subject: [Powernet] What neutron survey meters are you using? We are looking at replacing our neutron survey meters. I'm familiar with the REM-500 and the Ludlum 12-4 (9" moderator) meters. * What meter are you using? * Who calibrates it? * What is your (and technicians) overall impression of this meter? Thanks! Brent Robinson Radiation Protection Arkansas Nuclear One [email protected]<mailto:[email protected]> (479) 858-4771 [cid:[email protected]] This message is intended for the exclusive use of the intended addressee. If you have received this message in error or are not the intended addressee or his or her authorized agent, please notify me immediately by e-mail, discard any paper copies and delete all electronic files of this message.
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