BAINBRIDGE MASS SPECTROGRAPH PDF

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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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.

Ionization chamber is used to ionize the gas whose mass or isotope is to be determined and positive ions are produced.

Bainbridge Mass Spectrograph

Velocity selector has two fields electric and magnetic field both are applied perpendicular to the moving ion beam. A potential V is applied between two electrodes to produce the electric field. 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.

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Ions are formed in ionization chamber and pass through the cathode, then through collimating slits S 1 and S 2. The beam is then passed through velocity selector in which electric and magnetic fields are applied perpendicular to each other. The ion moves in straight line path for which both the forces acting on it are equal.

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If the mass of an ion is M, its charge q and its velocity v then. The radius of the path in the deflection chamber is directly proportional to the mass of the ion. The detection is done by photographic plate when the ions fall on it. The mass spectrum is recorded on the photographic plate, when a gas containing three isotopes is used. Note the wider line for the mass m 1showing its relatively greater abundance.

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This method of analysis is very bainbridbe and can detect differences in the masses of two ions as small as one part in 10 9. 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. MST-I Nov Engineering Physics by Dr.

Amita Maurya, Peoples University, Bhopal. 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.

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.

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Working Ions are formed in ionization chamber and pass through the cathode, then through collimating slits S 1 and S 2. The ion moves in straight line path for which both the forces acting on it are equal The velocity of ion which passes undeflected through the velocity selector is Bainbridge Mass Spectrographh A velocity selector msss used to produce a monovelocity ion beam and a transverse magnetic field was employed to discriminate between ions of spetcrograph masses.

Bainbridge Mass Spectrograph – Quantum Study

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. Linear separation 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.

The linear separation using equation 3.

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