Search found 64 matches

by lodovico
08 Feb 2019, 00:09
Forum: Detectors
Topic: SiPM and questions
Replies: 5
Views: 1151

Re: SiPM and questions

I Think so, post a picture, just to be sure.
L
by lodovico
06 Feb 2019, 23:51
Forum: Detectors
Topic: SiPM and questions
Replies: 5
Views: 1151

Re: SiPM and questions

Hi,
do not remove any plastic from the SiPM, it should be epoxy resin and its function is to protect the chip.
Lodovico
by lodovico
19 Nov 2018, 04:49
Forum: Detectors
Topic: 38B57 quantitative (food) measurents
Replies: 8
Views: 2275

Re: 38B57 quantitative (food) measurents

Hi Martin, yes, the short distance and the "shape" of the sample could change a lot the final calculation, I did just a try with some simple equipment and simple maths. The ideal would be a software simulation that can take into account the distance between sample and detector and also the shape of ...
by lodovico
13 Nov 2018, 19:48
Forum: Detectors
Topic: 38B57 quantitative (food) measurents
Replies: 8
Views: 2275

Re: 38B57 quantitative (food) measurents

Hi Martin,
I did some quantitative measurements (at least I tried) :
http://physicsopenlab.org/2017/06/22/ce ... ated-soil/
http://physicsopenlab.org/2017/07/23/an ... il-sample/

Lodovico
by lodovico
14 Feb 2018, 21:28
Forum: Spectrum
Topic: Kr-85 Spectrum from Vacuum Tube
Replies: 4
Views: 1626

Re: Kr-85 Spectrum from Vacuum Tube

Hello,
I have a "Krypton" tube too !
Here you can find the spectrum with a small "bump" around 514 KeV
http://physicsopenlab.org/2016/06/03/ra ... ron-tubes/
Regards
Lodovico
by lodovico
24 Oct 2017, 18:29
Forum: Spectrum
Topic: Call for interesting and unusual spectra.
Replies: 10
Views: 4225

Re: Call for interesting and unusual spectra.

Hi,
if you want I have a spectrum from lanthanum 138 (NaI 63x63mm) from 100g of lanthanum oxide



Lodovico
by lodovico
14 Aug 2017, 03:11
Forum: Spectrum
Topic: Tl 208 ?
Replies: 1
Views: 1113

Re: Tl 208 ?

Hi,
Thallium 208, from thorium, for sure.
Lodovico
by lodovico
13 Aug 2017, 03:44
Forum: Detectors
Topic: R & D Progress on Autonomous Spectrometer
Replies: 6
Views: 3507

Re: R & D Progress on Autonomous Spectrometer

Great work !
by lodovico
09 Aug 2017, 21:28
Forum: Detectors
Topic: Problem detecting K-40
Replies: 16
Views: 7710

Re: Problem detecting K-40

Hello, you have to run the measure for as long as you can, for example 2 or 3 hours. First take the background for three hours, you memorize it, and after that you take a measure with the sample (as much as you can, 100 g for instance), in the same chart, to have evidence of the difference. Of cours...