Search found 80 matches

by pilgrim
19 Aug 2019, 04:30
Forum: Resources
Topic: Radioactive Minerals
Replies: 3
Views: 57

Re: Radioactive Minerals

Impressive! It would be interesting to know the dose near that drawer...
by pilgrim
18 Aug 2019, 22:35
Forum: Detectors
Topic: Mirion PDS 100G, Spectrometric Personal Radiation Detector
Replies: 24
Views: 244

Re: Mirion PDS 100G, Spectrometric Personal Radiation Detector

Great review Massimo, I'm glad I gave you the right tip ;-)
I look forward to read your Fukushima chronicles !!
by pilgrim
18 Aug 2019, 21:45
Forum: Spectrum
Topic: Orvieto - High Natural Radiation Background
Replies: 3
Views: 73

Re: Orvieto - High Natural Radiation Background

Great work and reportage, Massimo.
I join to the Jonathan's question about the camera (photography is one of my hobbies too ) : the DSC prefix suggests me you use a Nikon camera ;-)

Ps : The PDS has become you best friend! ;-) ;-)
by pilgrim
29 Jul 2019, 05:43
Forum: Spectrum
Topic: Monazite (CE) from Madagascar
Replies: 5
Views: 93

Re: Monazite (CE) from Madagascar

Massimo,
excellent work, in the end your homemade analysis were very accurate.
The PDS seems to work very well ;-)
by pilgrim
27 Jul 2019, 02:13
Forum: Spectrum
Topic: Trinitite Sample 2 - From the First Nuclear Bomb Explosion
Replies: 6
Views: 131

Re: Trinitite Sample 2 - From the First Nuclear Bomb Explosion

How many CPS were you getting from the sample? Judging by the spectrum your sample appears more active than mine. I was only getting 2CPS. About 30 CPS, but I don't remember the background inside the lead, I think about 18 CPS, so 12 CPS for the sample. If it helps I remember I got 19 ± 1.4 CPM of ...
by pilgrim
25 Jul 2019, 05:43
Forum: Spectrum
Topic: Trinitite Sample 2 - From the First Nuclear Bomb Explosion
Replies: 6
Views: 131

Re: Trinitite Sample 2 - From the First Nuclear Bomb Explosion

Nice sample!
This is the spectrum recorded with mine.
Trinitite.JPG
Trinitite.JPG (38.16 KiB) Viewed 81 times
by pilgrim
30 Jun 2019, 19:03
Forum: Spectrum
Topic: Smoke Alarm - Americium 241
Replies: 6
Views: 311

Re: Smoke Alarm - Americium 241

I don't know but I think it is due to the detector efficiency at low energies...
In this case the advanced filter works as a zoom, to make PRA showing energies from 0 to 200 keV
by pilgrim
30 Jun 2019, 15:32
Forum: Spectrum
Topic: Smoke Alarm - Americium 241
Replies: 6
Views: 311

Re: Smoke Alarm - Americium 241

Hi Massimo, good work as always.
If it helps, this is my spectra recorded with the same source using a Victoreen LEG with a 1,5 x 0,5" NaI(Tl) crystal.
c-Am241-Victoreen-10000s.jpg
The peaks are 13.9, 17.7, 23.5 (sum peak of 20.8 e 26.4) and 59.6 keV
by pilgrim
22 Jun 2019, 05:33
Forum: Software
Topic: Dealing with temperature drift in PRA
Replies: 6
Views: 310

Re: Dealing with temperature drift in PRA

Conor Whyte wrote:
22 Jun 2019, 04:57
another thing I will need to do is to create a Pb castle with copper shielding to cut down the xrays.
This is very important, makes the difference!

Concerning PRA, if you simply click on SETTING -> SAVE SETTINGS, you'll find your current settings as default next time you run PRA.
by pilgrim
22 Jun 2019, 03:31
Forum: Software
Topic: Dealing with temperature drift in PRA
Replies: 6
Views: 310

Re: Dealing with temperature drift in PRA

For the point 1 if I click on SETTING -> SAVE SETTINGS AS, PRA saves the calibration. For the point 2 the only solution I thought is to take spectra in the basement, where the temperature is more constant comparing with the rest of the house. Moreover the background radiation is lower, thanks to the...