Question

can anyone ans this.......​

Answer 1

°◉◈✿｡ $\huge\sf{[ Hєℓℓσ ]}$｡✿◈◉°

$\huge\bold{Cyslotrone}$

It is a device used to accelerate charged particles like protons, deutrons, α-particles, etc, to very high energies.

PRINCIPLE :

A charged particle can be accelerated to very high energies by making it pass through a moderate electric field a number of times. This can be done with the help of a perpendicular magnetic field which throws the charged particle into a circular motion, the frequency of which does not depend on the speed of the particle and the radius of the circular orbit.

CONSTRUCTION :

As shown in figure, a cyclotron consists of the following main parts:

1. It consists of two small, hollow, metallic half-cylinders D1 and D2 called dees as they are in the shape of D.

2. They are mounted inside a vacuum chamber between the poles of a powerful electromagnet.

3. The dees are connected to the source of high frequency alternating voltage of few hundred kilovolts.

4. The beam of charged particles to be accelerated is injected into the dees near their centre, in a plane perpendicular to the magnetic field.

5. The charged particles are pulled out of the dees by a deflecting plate (which is negatively charged) through a window W.

6. The whole device is in high vacuum (pressure ∼10−6 mm of Hg) so that the air molecules may not collide with the charged particles.

THEORY :

Let a particle of charge q and mass m enter a region of magnetic field B→ with a velocity v→ normal to the field B→. The particle follows a circular path, the necessary centripetal force begin provided by the magnetic field.

WORKING :

Suppose a positive ion,say a proton,enters the gap between the two dees and finds dee D1 to be negative.It gets accelerated towards dee D1.As it enters the dee D1,it does not experience any electric field due to shielding effect of the metallic dee. The perpendicular magnetic field throws it into a circular path.At the instant the proton comes out of dee D1,,it finds dee D1 positive and dee D2. It moves faster through D2 describing a larger semicircle than before. Thus if the frequency of the applied voltage is kept exactly the same as the frequency of revolution of the proton,then every time the proton reaches the gap between the two dees, the electric field is reversed and proton receives a push and finally it acquires very high energy. This is called the cyclotron’s resonance condition. The proton follows a spiral path. The accelerated proton is ejected through a window by a deflecting voltage and hits the target.

Answer 2

Answer:

⭕ Cyclotron :-

A Cyclotron is a device used for accelerating the positive charge particles like proton , neutron etc.

Hope it Helps You ❣️