Scintillator Definition and 22 Threads

F8 tally is pulse height tally use in MCNP. Is it possible to see pulse height vs. time response in MCNP (as we can see on the oscilloscope) of, say, a scintillator detector placed in front of a pulsed X-ray source?

Recently I measured a range of sources with two detectors comparing their efficiency. One of the sources used (C-14) was a pure beta emitter and it made me wonder. If a radioactive source decays by beta then gamma, will one decay register as two counts as two radioactive particles are produced...

I recently performed an experiment that involved using a cylindrical scintillator to detect cosmic ray muons by observing the amount of particles that decayed within 20 microseconds over a long period of time. I'd like to use this to find the flux of muons at my scintillator so that I can...

When detecting a muon, we can use a plastic scintillator which consists of the components in the diagram attached. I am trying to understand what exactly the "two-stage amplifier" does which is located in the top left corner in the image attached? I am unable to find any information on it online...

Hello! I've got an gamma/x-ray NaI(Tl) Scintillator. It has a positive going signal design (Hamamatsu photomultiplier tube plus preamplifier). I want to acquire its raw signal by a 250 MHZ digital oscilloscope and to process the signal myself using scientific programming. What are the options...

I've attached an image from the book "nuclear physics" by John Lilley. It says "in only one case is the restulting photon energy sufficient to cause re-excitation". My question is what is this one case? I recall my lecturer saying only decay to S01 is sufficient to cause re-excitation, but I...

This may be a pretty basic question ,but i'll through it out any way. As a project i built a muon detector from 2 matched PMTs and 2 4x6x1 plastic PVT scintillators. And pulse processing NIM modules. I was getting pretty good coincidence reading,some what less than predicted.ie ( 1...

Hello! How is the count rate of a detector defined (I need for a scintillator)? It is just the number of particle hitting the detector per second times the efficiency of the detector at that energy?

. why plastic scintillator is more useful than other scintillator in beta decay experiment??

Homework Statement Calculate the energy loss loss ##\Delta T## for protons, deuterons and ##\alpha##-particles between ##10## to ##200##MeV when they're passing through a 2mm thick plastic scintillator. Suppose ##Z/A=0.56##, ##I=65eV## and ##\rho = 1.10##g/cm^3. Homework Equations Bethe...

Hello everyone, I have been playing around with Americium-241 from a smoke detector, and I was wondering where I could find a phosphorescent screen that would scintillate when hit with an alpha particle. Also, I was wondering what the different types of phosphor screens commonly used are and...

I have a liquid scintillator, the electronics system, and a beam of neutrons from a reactor. How do I calculate the neutron flux? Cold anybody give me a formula or equation? Not this equation: phi = n X v, where phi - flux, n = number of neutrons per cm3, v = velocity of the neutrons, because I...

I'm trying to make a LSC with U-238 (non-aqueous form) dipped in the scintillating cocktail to detect fast neutrons (no thermals or epithermals, only fast) from a Cf-252 source. How do I calculate the wavelength emerging from the cocktail (assuming U-238 does not react with the cocktail)? Also...

Hi, I am doing a high school project based on physics and I wondered if my idea works or not. So I was thinking to use gamma rays as a source of energy to produce enough current to charge my phone. My question is that would it be possible to use scintillators (used in photomultipliers in...

If the radiation flux is calculated as: F = \frac{L}{2*pi*r^{2}} where L is the luminosity of the source and r is the distance from the source and the count rate of a scintillator \frac{number-of-scintillations}{time} What is the relationship between them? There obviously should be one, as...

Hi everybody, I am trying to set up a lab experiment on muon detection and determination of its decay time. I know that when a muon first reaches the scintillator it slows down because of ionization and atomic excitation of solvent molecules. The deposited energy is transferred to the fluor...

I'm currently in the process of building a new muon detector using PMTs and Scintillators http://www.hardhack.org.au/scintillator_detector for testing the validity of my other cheaper detector projects. But I was also thinking of building another detector for logging average Cosmic Ray levels...

I know that theorically the numbers of counts between compton edge and the photopeak must be zero. In practice it doens't occur. Why? Thanks in advance!

Hi all, i want to ask use of scintillator. Actually what i studied that to convert highly energetic gamma rays, to visible photon we use scintillator before p.m. tube, so that photoelectric effect can occur and we get photo-electrons. But when gamma rays interact with matter in three different...

I'm currently taking intermediate Lab II (Physics 414) and we're currently working on Gamma Ray Spectroscopy. We are tasked with manually calibrating a NA-I Scintillator doped with Thallium in order to determine the isotope composition of an unknown source. My partner and I have been thinking...

I am trying to calculate the energy at which the Compton edge occurs for a sample of Cs137 using a NaI(Tl) scintillator. I know the original energy of the gamma ray was 661.6keV. and that for the Compton edge the angle between the electron and the line of incident must be 0degrees (for max...

I believe that a scintillator converts xray photons into visible photons through the process of exciting electrons, then allowing it to fall to ground state. My q is: shouldn't the energy of the photon released be the same as the photon energy that is used to excite the electron? Just on...