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Solid state simeconductor
It is main advantage is that it has much better resolution than NaI(Tl)It is main disadvantages are that it is not available in large sizes and it is much more expensive.
The principle of operation :its acts as a solid ionization chamber so it acts as an insulator and dose not allow current to flow until ionization has taken place in its volume. It kept very cold to minimize the current produced by thermal activation of electrons.
Collimator: it is used on the scintillation detector to limit its counting volume. It is a specially designed lead shield with one or more holes in
It has two types:1 – The open flat field collimator: it is useful for detecting gamma rays from a relatively large volume such as the thyroid or kidney.2- The focused collimator : it has a number of trapped holes oriented to point at a small volume 7.5 to 12.5 cm from it , it is often used in nuclear medicine
what is the physical significance of damping coefficient?
1. Describe the process of diffusion in cells (not more than 2 pages). 2. Derive the equation for Fick's second law. 3. Draw a typical FRAP curve and explain its differen
How many types of illuminators are there? As there are no standards inside the industry, the term "type" is slightly confusing. Regading to power usage, the lamp illuminators c
Find amplitude of electric field ina parallel beam of light of intensity 2W/m2 Ans: Given that intensity I=power/area=2W/M2 by using this formula :intensity I=(Emax^2/2c mue not
Radiation Hazards: 1. They can injure our body cells. 2. Excessive radiation might be cause cancer. 3. Energetic radiation penetrates inside the body and can cause other
Q. Distinguish between interference and diffraction fringes? Interference Diffraction 1) It is because of the superposition of secon
Explain about the amplitude mode of data presentation. The A-mode: The A-mode or the Amplitude mode of data presentation exhibits the amount of obtained ultrasonic energy li
Define Frozen Solid (Moscow Phys-Tech)? Evaluation how long it will take for a small pond of average depth D=0.5 m to freeze entirely in a very cold winter, when the
advantages and disadvantages of maximum and minimum thermometers
Satellite Motion A satellite is acted upon through the force of gravity and this force does accelerate it towards the Earth. Within the absence of gravity a satellite would mov
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