What is velocity selector?

A Wien filter also known as velocity selector is a device consisting of perpendicular electric and magnetic fields that can be used as a velocity filter for charged particles, for example in electron microscopes and spectrometers. It is used in accelerator mass spectrometry to select particles based on their speed.

What is velocity selector and explain its working?

Velocity selector is also known as Wien filter is a device with a perpendicular arrangement of electric and magnetic fields which is used as a velocity filter for charged particles. Velocity selector exploits the principle of motion of a charge in a uniform magnetic field.

What is velocity selector Class 12?

The velocity selector consists of an evacuated region of crossed electric and magnetic fields in the plane of the paper and normal to it. So, the electric field is parallel to the motion of the particles. Thus, the electric force acting on the ions is equal to the magnetic forces on them.

How does a velocity filter work?

Starts here7:43Velocity Filter – YouTubeYouTubeStart of suggested clipEnd of suggested clip58 second suggested clipField we take it in direction let us say this is velocity. And we want a direction of magnetic fieldMoreField we take it in direction let us say this is velocity. And we want a direction of magnetic field coming out this is the direction of magnetic field B this B is outward.

How do you make a velocity selector?

Starts here12:07Velocity Selector: An Explanation – YouTubeYouTube

What is velocity selector derive an expression for it?

This principle is exploited in an equipment called – Velocity selector, which is shown in the figure below. In a velocity selector, charged particles must move at a speed of v=EB v = E B in order to pass through the equipment. An uniform magnetic field throughout the space between the two charged plates.

How does a velocity selector work in a mass spectrometer?

A velocity selector is used with mass spectrometers to select only charged particles with a specific velocity for analysis. It makes use of a geometry where opposing electric and magnetic forces match for a specific particle speed. It therefore lets through undeflected only those particles with the selected velocity.

Where are velocity selectors used?

How do you solve velocity selector problems?

Starts here10:46Velocity Selector: An Example Problem – YouTubeYouTube

How do you draw a velocity selector?

What is the function of velocity selector in a Bainbridge mass spectrograph?

The velocity selector permits the ions of a certain velocity to come out of it, due to the combined action of an electric and a magnetic field.

What does a velocity selector do in a mass spectrometer?