BWP-34

Sorry I'm not very good at this stuff. I read somewhere that a photodiode called BWP-34 could be used to measure gamma radiation. I don't really know what a photodiode is but I looked this thing up and found some data sheets but I just don't know how to turn that into a reading. I don't have links but all I did was google this so I'm sure you could do the same. How can I make this work and turn the data in to reading of wavelength or something similar. Thanks in advance.

Entropic

Can't help you if your not going to post the links.

You might try this

I thought

A ‘real’ Geiger counter makes a pleasant ticking sound. Our diode
sensor, on the other hand, is completely silent.
We can remedy the situation with the help of a comparator and a
circuit to stretch the pulses so that we can drive a loudspeaker to
make clicks. The tested circuit shown here uses a type LM311 comparator
which produces a pulse on its output when the amplitude
of a pulse on its input exceeds a threshold set by the trimmer. The
transistor at the output stretches the pulse to make it audible. The
final output can be used to drive headphones, an audio amplifier
and a loudspeaker, or a PC-style active speaker.

was pretty slick.

Sorry I'm not very good at this stuff.

Have you heard of Google ? (I don't know anything about measuring radiation but I can build both of those circuits in a day. Note the component placement on the back side of perf board: see attached)

I don't know anything about gamma radiation. The BPW34 datasheet says it has a bandwidth of 600 - 1050nm with peak sensitivity at 900nm. That seems like the red to infra-red range, right?

If you need to measure a narrow optical wavelength, you use a narrow-band filter in front of the detector.

I don't know if gamma radiation is "optical" or how you filter it, or if any of this applies...

To measure optical wavelength you need a prism or diffraction grating to break-up the spectrum. Then, you can use a CCD detector (like a digital camera) to detect the various wavelengths or you can move the prism/diffraction grating or detector so that only one wavelength is measured at a time.

With the Arduino (or almost "anything") you are going to need a signal somewhere in the 1 Volt ballpark. That means you'll probably need some sort of amplifier circuit. I found [u]this page[/u] about using photodiodes.

That means you'll probably need some sort of amplifier circuit.

see reply#1

Can I use BPW34 for color detection?
I want to detect black,yellow and green color with high speed so can I use BPW34 as detector with LED?
How much time require to detect color with led , BPW34 detector and Arduino uno board?

BWP34

PIN photo diode circuit

GAMMA RADIATION DETECTOR