Search found 225 matches

by luuk
20 Jan 2020, 06:01
Forum: Detectors
Topic: Crystal shape and size
Replies: 3
Views: 67

Re: Crystal shape and size

Hi Marcel, Building a detector is not so difficult as you may think, it is fun to do and building your own detector and will save you a lot of money. You can get/find lots of information and support here on the forum to build your detector and I have always some materials for sale for real hobby pri...
by luuk
17 Jan 2020, 15:27
Forum: Detectors
Topic: Crystal shape and size
Replies: 3
Views: 67

Re: Crystal shape and size

Hi Marcel, The crystal size for most hobby use is in my opinion around 2”x2” but with a 1”x1” or even smaller you can have great results as well, if it fits the budget. Also it is more easy and cheaper to make a simple (lead) shield for a smaller detector than for a large one. If your interest field...
by luuk
06 Jan 2020, 06:47
Forum: Detectors
Topic: Building an XRF detector with CsI(Tl)
Replies: 2
Views: 79

Re: Building an XRF detector with CsI(Tl)

Hi Steven, Yes, a thin slice of CsI(Tl) can be used as xrf detector best example is the Rap-47 detector. It is simple to build a detector like that, only the tricky part is you will need a good pmt that has a low noise level that is not always easy to find. Simple and cheap aluminum house hold foil ...
by luuk
17 Dec 2019, 07:14
Forum: Spectrum
Topic: Refurbishing project of a large 5”x3” NaI(Tl) detector.
Replies: 6
Views: 202

Re: Refurbishing project of a large 5”x3” NaI(Tl) detector.

Hi guys,
Thank you all for all positive comments always nice to know that some of you read my reports.
Massimo: Unfortunately for you but this is my hobby and I do it for fun so I will keep my Comic Sans font for these report,
you have to get used to it :-)
Luuk
by luuk
10 Dec 2019, 05:42
Forum: Detectors
Topic: More fun with CeBr3
Replies: 2
Views: 97

Re: More fun with CeBr3

Hi Steven,
4.2% with a standard pmt is very nice, great detector!!
Luuk
by luuk
10 Dec 2019, 05:38
Forum: Spectrum
Topic: Refurbishing project of a large 5”x3” NaI(Tl) detector.
Replies: 6
Views: 202

Refurbishing project of a large 5”x3” NaI(Tl) detector.

Hi Guys,
I did recently a refurbishing on a large 5" inch NaI(Tl) detector and made a report about the whole process with lots of pictures!
If you are interested please read the attached pdf.
Luuk
by luuk
08 Dec 2019, 22:35
Forum: Resources
Topic: Simple Thorium Linearity Check with Excel
Replies: 2
Views: 97

Re: Simple Thorium Linearity Check with Excel

Hi Steven,
Nice tool, simple but effective!
I like it.
Luuk
by luuk
08 Dec 2019, 07:54
Forum: Detectors
Topic: Fun with LaBr3
Replies: 6
Views: 201

Re: Fun with LaBr3

Hi Conor,
The price is more or less the same for both crystals.
luuk
by luuk
06 Dec 2019, 07:24
Forum: Detectors
Topic: HPGe detector back to life after long sleep
Replies: 12
Views: 334

Re: HPGe detector back to life after long sleep

Hi Janni,
Thanks for the info, yes it is a nice HpGe for sure!
Looking at the picture it is not 100% to see but it looks to me like a beryllium window.
Beryllium has a colour that looks a little bit like (new)lead.
Good luck with your detector.
Luuk
by luuk
05 Dec 2019, 07:57
Forum: Spectrum
Topic: A Day in Fukushima - Gamma Spectroscopy
Replies: 17
Views: 445

Re: A Day in Fukushima - Gamma Spectroscopy

Hi Massimo,
Thanks for the nice report about your Fukushima trip, interesting reading material.
Luuk