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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
Right-Hand Screw Rule In physics, the right-hand rule is a general mnemonic for understanding notation conventions for vectors in 3 dimensions. It was invented for use in elect
What are wave fronts? (Physics) A wave front is an imaginary surface joining all points in space that are reached at the similar instant by a wave propagating by a medium. L
Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative
A block initial located 3m up a frictionless inclined plane is given an initial velocity of 6m/s up the ramp. The plane is 10m long and titled by 30 degree. a) How long does it tak
A student throws a set of keys vertically upward to his fraternity brother, who is in a window 4.40 m above. The brother's outstretched hand catches the keys 1.30 s later. (a) W
a n-p-n transistor having a.c. current gain of 50 is to be used to make an amplifier of power gain 300. what will be the voltage gain of amplifer
Suppose the sides of a closed polygam represent vector arrangend head to tail rule , what is sum of these vectors ?
A 2350-kg granite tombstone absorbs 2.8 x 107 J of energy from the Sun to change its temperature from 5.0°C at night to 20.0°C during an autumn day.
Q. Why the centre of Newton's rings pattern appears dark? The thickness of the air film becomes zero at the point of contact of lens L with glass plate P. Therefore there is no
In plane transmission grating the width of the each slit is same to half of the opaque portion. Which order of spectra will be absent?
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