BAINBRIDGE MASS SPECTROGRAPH PDF

Published by on August 28, 2021
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Study about Bainbridge Mass Spectrograph, In the Bainbridge mass spectrograph, the positive rays are produced in a specially designed discharge tube ♢. In Bainbridge mass spectrograph, field particles of same velocity are selected by using a velocity selector and then they are subjected to a uniform magnetic field. Bainbridge Mass Spectrometer || Nuclear Physics || 12th Std Physics undefined. Bainbridge Mass Spectrograph | Determination of Isotopic masses (Lecture No.

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The linear separation using equation 3. Note the wider line for the mass m 1showing its spectrotraph greater abundance. The mass spectrum is recorded on the photographic plate, when a gas containing three isotopes is used.

A velocity selector was used to produce a monovelocity ion beam and a transverse magnetic field was employed to discriminate between ions of different masses. Velocity selector has two fields electric and magnetic field both are applied perpendicular to the moving ion beam.

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This method of analysis is very accurate and can detect differences in the masses of two ions as small as one part in 10 9. Linear separation This method of analysis is very accurate and can detect differences in the masses of two ions as small ,ass one part in 10 9. The magnetic field may be varied, so changing the radii of the particles’ paths so that ions of different masses fall on a fixed collector. Working Ions are formed in ionization chamber and pass through the cathode, then through collimating slits S 1 and S 2.

Spectrobraph Mass Spectrograph A velocity selector was used to produce a monovelocity ion beam and a transverse magnetic field was employed to discriminate between ions of different masses.

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Mass spectrometer In Aston developed the first really good mass spectrograph, an instrument for measuring the masses of isotopes. The ion bainbride in straight line path for which both the forces acting on it are equal.

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Ions are formed in ionization chamber and pass through the cathode, then through collimating slits S 1 and S 2. This method of analysis is very accurate and can detect differences in the masses of two ions as small as one part in 10 9.

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The beam is then passed through velocity selector in which electric and magnetic fields are applied perpendicular to each other. Uniform magnetic field acting normal to the path of ions having same velocity deflects the ions of different masses from a straight path to circular path of different radii.

His apparatus gave accuracies of one part in If M 1 and M 2 are the masses of two isotopes and if x 1 and x 2 are the distances from S 3. Ions are formed at Vainbridge and pass through the baijbridge C and then through a slit S 1.

A magnetic field strength B is applied at right angles to the electrostatic field and so the electrostatic and electromagnetic forces act in opposite directions to each other. Principle Uniform magnetic field acting normal to the path of ions having same velocity deflects the ions of different masses from a straight path to circular path of different radii, Construction i Ionization Chamber Ionization chamber is used to ionize the gas whose mass or isotope is to be determined and positive ions are produced.

Ionization chamber is used to ionize the gas spectgograph mass or isotope is to be determined and positive ions are produced. The ion moves in straight line path for which both the forces acting on it are equal The velocity of ion which passes undeflected ,ass the velocity selector is A simpler form of the mass spectrograph than Aston’s is that due to Bainbridge and a plan view of this is shown in Figure 1.

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Note the wider line for the mass m 1showing its relatively greater abundance. If the mass of an ion is M, its charge q and its velocity v then or The radius of the path in the deflection chamber is directly proportional to the mass of the ion.

Amita Maurya, Peoples University, Bhopal.

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A potential V is applied between two electrodes to produce the electric field. The detection is by either a photographic plate or a collector that produces a small current when the ions fall on it. MST-I Nov Figure 2 shows the appearance of the photographic plate when a gas containing two isotopes is used.

The detection is done by photographic plate when the ions fall on it. They then travel between two plates Mas and B, between which a potential V is applied. The radius of the path in the deflection chamber is directly proportional to the mass of the ion. If the mass of an ion is M, its charge q and its velocity v then. A magnetic field strength B is bainridge at right angles to the electrostatic field and so the electrostatic and electromagnetic forces act in opposite directions to each other.

The radius of the path in the deflection chamber is directly proportional to the mass of the ion.