Hi All
We have a Wilson's Cloud Chamber-expansion type that I have just come across in the storeroom(never been used from the look of it!!) The instructions say to use a weak solution of Thorium Salt but I can't find it in any of the catalogues that I have. Maybe, it being a radioactive solution it is banned. Does any of you bright sparks out there know???
Take care
Mother
Thorium Salt
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Labbie
- Posts: 3247
- Joined: 28 Nov 2006, 10:00
- Job Title: Retired
- Suburb: At Home
- State/Location: NSW
Re: Thorium Salt
Thorium in all forms is BANNED Page 247 Volume 2 Appendices of CSIS. Banned chemical in DET schools
Sorry
Sorry
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Re: Thorium Salt
Hi All,
Just to reiterate what Pommy has mentioned. Thorium Salts are Banned in DET schools, but out of pure curiosity, Thorium Nitrate is used..
Hope this has been informative for you.
Cheers,
Robb.....
Just to reiterate what Pommy has mentioned. Thorium Salts are Banned in DET schools, but out of pure curiosity, Thorium Nitrate is used..
Hope this has been informative for you.
Cheers,
Robb.....
Last edited by Robb on 16 Oct 2007, 12:31, edited 1 time in total.
Reason: text format
Reason: text format
Dr Robert Crosdale. MRACI. NSS. NSSA. NASA.
Ph.D (Chem), Post Grad Ph.D (Physics), M.Ed, B.Sc (Hons), Dip. Appl. Sc. (Chem)
Lake Munmorah High School.
University of New England.
University of New South Wales.
University of Newcastle.
To understand the Universe from our perspective, we need to look towards our own backyard first for answers.
** AD ASTRA PER ASPERA - SEMPER EXPLORO **
Ph.D (Chem), Post Grad Ph.D (Physics), M.Ed, B.Sc (Hons), Dip. Appl. Sc. (Chem)
Lake Munmorah High School.
University of New England.
University of New South Wales.
University of Newcastle.
To understand the Universe from our perspective, we need to look towards our own backyard first for answers.
** AD ASTRA PER ASPERA - SEMPER EXPLORO **
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Mother
- Posts: 275
- Joined: 17 May 2006, 10:00
- Job Title: Science lab. technician
- School: Dubbo College/Senior Campus
- Suburb: Dubbo
- State/Location: NSW
Re: Thorium Salt
Thanks for that info.guys and gals.Can't find Thorium Nitrate either!!
Cheers
Mother
Cheers
Mother
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Krysia Lee
- Posts: 228
- Joined: 27 Oct 2009, 10:40
- Job Title: Labbie
- School: Brigidine College
- Suburb: St Ives
- State/Location: NSW
Re: Thorium Salt
Hi Everyone.
Does anyone out there use a Wilson's cloud chamber. It says to use it with Thorium Oxide which is a banned chemical. We've tried using it with our radioactive sources and ethanol. It isn't working very well. I've been putting in the source and ethanol then sucking out the air with the bike pump. Not much happening. Am I'm doing something terribly wrong? I'd appreciate any help/advice.
Krysia
Does anyone out there use a Wilson's cloud chamber. It says to use it with Thorium Oxide which is a banned chemical. We've tried using it with our radioactive sources and ethanol. It isn't working very well. I've been putting in the source and ethanol then sucking out the air with the bike pump. Not much happening. Am I'm doing something terribly wrong? I'd appreciate any help/advice.
Krysia
Re: Thorium Salt
We use cloud chamber every year. The ethanol vapors must be cooled down with dry ice. We use Pb210 as alpha particle source. It works really well.I put ethanol on a small cloth in the chamber with radioactive source and dry ice goes under the chamber and cools the chamber down. Shine light into it and will see the traces of the ray path. You can use magnets to see if the trace will bend.
Good luck, Lada
Good luck, Lada
Re: Thorium Salt
Oh, and it works better in a darkened room
