Search found 7 matches

by Lewis
27 Oct 2019, 09:20
Forum: Introductions >> Start Here !
Topic: Newly joined, sup.
Replies: 2
Views: 1233

Re: Newly joined, sup.

Lewis, Thanks for the introduction and welcome to the forum.. We seem to have have a common interest in physics and the philosophy of nature, and what could be more puzzling that matter instantly converting itself to space in the form of gamma rays. Lot's more to discover here.. Steven Indeed, look...
by Lewis
26 Oct 2019, 21:57
Forum: Introductions >> Start Here !
Topic: Newly joined, sup.
Replies: 2
Views: 1233

Newly joined, sup.

Hey, my name is Lewis and i live in Sweden, gothenburg. I'm deeply interested in fundamental physics and Iv been ”unoficially” studying physics, that is iv been teaching myself from the ground up since 2013. I love everything related to general relativity, special relativity, quantum mechanics, nucl...
by Lewis
26 Oct 2019, 21:44
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 3022

Re: Geiger Müller tubes on flights

I have never seen anything on the LND web site or in their specifications or literature describing an altitude or atmospheric pressure limit for the 7311 pancake detector or any other they manufacture. However, in 1987, Ludlum (maker of popular pancake detectors based on the LND 7311 detector) issu...
by Lewis
25 Oct 2019, 18:41
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 3022

Re: Geiger Müller tubes on flights

I have taken a data-logging GM counter (a Mazur PRM 9000 with an LND 7317 pancake GM tube) on a flight of a few hundred miles. It operated fine and the radiation rate (as is well known) depends so sensitively on altitude (at least for ordinary flights) that it could be used as a crude altimeter. I ...
by Lewis
15 Oct 2019, 00:24
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 3022

Re: Geiger Müller tubes on flights

I'm not sure if it would be safe as I've never done it. I've only taken scintillation detectors when travelling. However, living in Alaska required the majority of my mail to come by air and I've had three different thin window GM tubes sent to me without issue. None of them were in pressurized pac...
by Lewis
15 Oct 2019, 00:22
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 3022

Re: Geiger Müller tubes on flights

I guess nobody can guarantee it, but you may have good chances not to loose the tube. I got one Ludlum model 44-9 probe with a LND7311 GMT shiped all the way from USA to Europe in a non airtight container and it survived. But the producer warns in the manual that "The GM tube face can rupture above...
by Lewis
10 Oct 2019, 03:16
Forum: General discussion
Topic: Geiger Müller tubes on flights
Replies: 11
Views: 3022

Geiger Müller tubes on flights

Hey. I was wondering if taking a pancake detector style GM tube with a thin MICA window onto an airplane as hand baggage would distroy it due to the changing air preasure. Iv heard that the cabin preasure can deivate upto 8000 feet AGL which is the maximum rated altitude for most GM tubes. Iv certai...