It is not true that to make high-level educational scientific experiments it is necessary to spend a lot of money to buy the necessary equipment. Often with a bit of good will, time and lot of patience you can build everything you need : you save, you learn and you have fun !
Post with the description of the Equipment : DIY Diffraction grating Spectrometer
Post with the description of the Equipment : DIY Fluorometer for DNA Concentration
Photoelectric Effect Equipment
Post with the description of the Equipment : Study of Photoelectric Effect
Ramsauer-Townsend Effect Equipment
Post with the description of the Equipment : Ramsauer-Townsend Effect
Johnson Noise & Shot Noise Equipment
Post with the Johnson Noise Equipment : Johnson Noise, Boltzmann Constant and Brownian Motion
Post with the Shot Noise Equipment : Shot Noise and Electron Charge
Post with the Microwave Equipment : Gunnplexer and Microwaves
Microwave Doppler Sensor
Post with the Microwave Doppler Sensor Equipment : Microwave Doppler Sensor
X-Ray Proportional Counter
Post with the Proportional Detector Equipment : X Ray Proportional Counter
Post with the Neutron Detector Equipment : DIY Neutron Detector
Post with the Gamma Spectrometer Equipment : DIY Gamma Spectrometry
Cosmic Rays Telescope
Post with the Cosmic Rays Telescope Equipment : Cosmic Rays and coincidence Detector
Post with the Coincidence Detector Equipment : PSoC Coincidence Detector – I
Post with the XRF Spectrometer Equipment : DIY XRF Spectrometry
Webcam Nuclear Particle Detector
Source = Strontium (90Sr) 0,1μCi
CPS (counts per seconds) = 1,38
Trace Length = 33px * 6μm = 198 μm
The CMOS sensor detects the beta radiation emitted by the decay of strontium. In the picture aside you see the magnified image of the track of an electron.
Post with the Webcam Particle Detector Equipment : DIY Webcam Particle Detector
Charge Sensitive Preamplifier (CSP)
The charge sensitive preamplifier (CSP) is a circuit in which the current pulse generated by a detector is converted into a voltage pulse by means of the charge of a capacitor. In the image below it is presented our “low cost” CSP.
The charts below show the signal from the detector (blue) and the signal produced by the CSP (yellow).
Post with the CSP Equipment : X Ray Spectroscopy with PIN Photodiode
Trans – Impedence Amplifier (TIA)
The trans – impedence amplifier (TIA) is a circuit in which the current pulse generated by a detector is converted and amplified into a voltage pulse by means of the voltage generated in a resistor. In the image aside there is our TIA used for the SiPM detectors.
The chart below show the signal from the detector (blue) and the signal amplified by the TI (yellow).
X-Ray Diffractometer (refurbished Teltron apparatus)
A simple, DIY and low-cost X-Ray generator could be very useful ! The images below show the apparatus we have built with a russian NOS X-Ray tube. We built also a cabinet with a HV section and with the ammeter to measure the anodic current. The filament is fed with a constant-current power supply. Important ! The tube must be covered with a lead shield in order to prevent x-ray from going out in directions others than the front direction.
With a PSoC microcontroller we have built a simple threshold pulse counter. This equipment is very useful in several applications such as photon counting or radiation counting. A feature of this counter is the threshold which can be modified with a trimming potentiometer, between 0 mV to 1000 mV. The measaurement is done in CPS (pulses per seconds) or in CPM (pulses per minutes) and it is also calculated the statistical error.