velocity selector is used to produce
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 the condition for velocity selector?
A Velocity Selector
The magnitude of the force exerted by the magnetic field is F = qvB, as long as the velocity is perpendicular to the field. The idea is that, if the two forces are equal and opposite, the net force is zero, and the particle passes through the region without changing direction.
How velocity is selected in velocity selector?
To select charged particles of specific velocity, we can use the cross fields – perpendicular electric & magnetic fields. Particles whose velocity equals the ratio E/B would come out undeflected. This set up is called the velocity selector.
What is meant velocity selector What is the significance of velocity selector?
Velocity selector is used in accelerator to select charged particle of particular velocity out of a beam containing charges moving with different speeds.
What is velocity selector write the expression for the same?
Answer. The magnitude of the force exerted by the magnetic field is F = qvB, as long as the velocity is perpendicular to the field. The idea is that, if the two forces are equal and opposite, the net force is zero, and the particle passes through the region without changing direction.
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.
Why crossed electric and magnetic field is called velocity selector?
If the charge enters into the crossed fields with velocity v, other than vo, it results in any of the following possibilities (Table 3.4). So by proper choice of electric and magnetic fields, the particle with particular speed can be selected. Such an arrangement of fields is called a velocity selector.
What is a cyclotron used for?
A cyclotron is a type of compact particle accelerator which produces radioactive isotopes that can be used for imaging procedures. Stable, non-radioactive isotopes are put into the cyclotron which accelerates charged particles (protons) to high energy in a magnetic field.
What is cyclotron principle?
Cyclotron is a device used to accelerate charged particles to high energies. It was devised by Lawrence. Cyclotron works on the principle that a charged particle moving normal to a magnetic field experiences magnetic lorentz force due to which the particle moves in a circular path.
Can a stationary charge produce magnetic field?
A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field.
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