I use a wad cutter to cut foils
Be is used as it is the first stable (sort of) metal in the periodic table ie low Z so low energy gammas / x-rays can go throught it
Search found 1303 matches
- Sat Oct 24, 2020 6:22 pm
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Portable XRF detector window repair
- Replies: 11
- Views: 1311
- Thu Oct 22, 2020 9:35 am
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Portable XRF detector window repair
- Replies: 11
- Views: 1311
Re: Portable XRF detector window repair
I do not understand
I put up 15micron thickness solution over your 13 micron measurement
and you need 120mm when you said originally 13 microns
or is the detector nearly 5 inches in diameter --i doubt\\
please clarify!!!!
I put up 15micron thickness solution over your 13 micron measurement
and you need 120mm when you said originally 13 microns
or is the detector nearly 5 inches in diameter --i doubt\\
please clarify!!!!
- Wed Oct 21, 2020 6:02 pm
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Portable XRF detector window repair
- Replies: 11
- Views: 1311
Re: Portable XRF detector window repair
use new Be foil
http://www.goodfellow.com/catalogue/GFC ... V2hvddblfZ
BE000210 looks right.
Be careful it is not good for you
you need the Be foil to keep it light tight and to remove the low energy spectrum (noise)
http://www.goodfellow.com/catalogue/GFC ... V2hvddblfZ
BE000210 looks right.
Be careful it is not good for you
you need the Be foil to keep it light tight and to remove the low energy spectrum (noise)
- Tue Oct 20, 2020 12:37 am
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: My preamp design
- Replies: 1
- Views: 443
My preamp design
Couldn't put the schematic up in the FAQ section so here it is
- Tue Oct 20, 2020 12:34 am
- Forum: FAQs: Neutron - Radiation Detection
- Topic: FAQ - Roll your own preamp (Richard Hester design)
- Replies: 13
- Views: 1235
Re: FAQ - Roll your own preamp (Richard Hester design)
I'll put up my design It is a bit more than a preamp as it has post gain / shaping and a discriminator or lower window output to remove low energy pulses or noise for counting modes. The analize output is suitable for direct connection to a MCA It uses a cascode at the input to mitigate gate capacit...
- Mon Oct 19, 2020 10:50 pm
- Forum: Images du Jour
- Topic: Germanium Sputtering in the new Reserach Facility
- Replies: 11
- Views: 1882
Re: Germanium Sputtering in the new Reserach Facility
as promised a few pics of a Ge target that got a little hot
- Mon Oct 19, 2020 6:21 pm
- Forum: Files
- Topic: Photodiode Pulser Circuit
- Replies: 3
- Views: 5622
Re: Photodiode Pulser Circuit
I do not know about the original file but I use this one to test SPIMs and PMT's
Note it uses a very high voltage to get the necessary dI/dT through the blue LED
Note it uses a very high voltage to get the necessary dI/dT through the blue LED
- Thu Oct 15, 2020 6:18 pm
- Forum: Images du Jour
- Topic: Germanium Sputtering in the new Reserach Facility
- Replies: 11
- Views: 1882
Re: Germanium Sputtering in the new Reserach Facility
Dennis my sputtering system at work uses a 20kV 2mA argon beam to ablate a target held at 45 degrees to the beam this then sprays the ablated onto rotating catchers. Benefit of this system is the ions arrive with 10 -100eV of energy so chemically bond to the receiving surface. Your sputter coater is...
- Thu Oct 15, 2020 6:05 am
- Forum: Neutrons, Radiation, and Detection (& FAQs)
- Topic: Cooking some cake
- Replies: 9
- Views: 918
Re: Cooking some cake
All covered by IAEA rules that most aligned countries have signed up to
NORM = naturally occurring radioactive material is exempt unless efforts are made to purify or separate it
so extracting yellowcake is "verboten"
NORM = naturally occurring radioactive material is exempt unless efforts are made to purify or separate it
so extracting yellowcake is "verboten"
- Mon Oct 12, 2020 6:17 pm
- Forum: Vacuum Technology (& FAQs)
- Topic: LCD Vacuum Sensor
- Replies: 14
- Views: 3609
Re: LCD Vacuum Sensor
Most of the thermocouple gauges use the octal valve (tube) plug on them so you will want the octal valve (tube) socket