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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
Under standard state conditions at 37 o C, a biochemical reaction : A ↔ B + C has an equilibrium constant K = 0.0422 mol/dm 3 . (i) Calculate the standard
Coulumb's Law: Statement: The magnitude of the electrostatic force among two point's charges is directly proportional to the product of the magnitude of the charges and inve
What are the basic block structure of communication system? What do you understand by sky wave propagation?
What is a calorie? a) Amount of heat needed to raise one gram of water one degree Celsius. b) Amount of work needed to move one gram of water by one centimeter. c) Amo
Electromotive force EMF (ξ) - This is the electrical energy from an ideal battery with no internal resistance. It is also the open circuit value of a battery (no current is drawn
It is a method of depositing a thin layer of one metal over one more metal by the method of electrolysis. The articles of cheap solids are coated with valuable metals like silver a
average or mean value of AC
What are Solid core or multicore? It will depend on the use to that the optic is put and the actual installation conditions. Solid core optics has usually, a larger bending rad
a pond is an example of
(1) In Boolean algebra only two types of state variables (0 and 1) are permitted. (2) The variables (A, B, C ....) of Boolean algebra are subjected to three operations.
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