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Actually it is due to the nucleus's. the protons + neutrons) of the individual atoms. Each element (or isotope) have different Atomic Mass (mainly due to the nuclear mass) and different atomic number (equal to nos of protons in the nucleus). The canal rays (also known as the anode rays are actually the nucleus of the atoms that have been ripped of electrons, hence acquiring an overall positive charge equal to the number of protons in the nucleus of the atom. But since different elements have different mass numbers and atomic numbers hence the e/m ratio varies for the elements canal rays.
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What is the evidence that show cathode rays consists of charged particles?
in a cathode ray tube the cathode rays move towards the anode(positively charged) fixed plate.
What are canal rays?
Canal rays, sometimes called anode rays, were first observed in by Eugen Goldstein in 1886. These rays are streams of positive ions in a rarefied gas and have a higher mass compared to electrons.
What is the charge of the particle in cathode rays?
Cathode rays are attracted to the positive charge on the anode! They are repelled by the negative charge on the cathode.
A cathode ray produced in a gas-filled tube is deflected by a magnetic field A wire carrying an electric current can be pulled by a magnetic field A cathode ray is deflected away from a negatively?
They are negatively charged
Why you use p 10 gas in xrf?
Gas flow is used mainly for detection of longer wavelengths. Gas flows through continuously. The gas is usually 90% argon, 10% methane ("P10"), although the argon may be replaced with neon or helium where very long wavelengths (over 5 nm) are to be detected. The argon is ionised by incoming X-ray photons, and the electric field multiplies this charge into a measurable pulse. The methane suppresses the formation of fluorescent photons caused by recombination of the argon ions with stray electrons.
Differentiate between anode ray and cathode ray?
Anode ray is positive and cathode ray is negative
What are stationary anode x ray tubes?
An x-ray tube where the anode is held still, rather than rotated as would happen in the rotating anode tube.
What A low pressure gas filled glass tube which generates a glowing beam between cathode and anode?
Cathode ray.
In the production of anode rays why perforated cathode plate is used?
For the formation of the anode ray which is the opposit in direction of the cathod ray.
Ray of radiation traveling from the cathode to the anode?
Cathode Ray
Difference between rotating anode x ray tube and stationary x ray tube?
A rotating anode promotes cooling between exposures by distributing the intense beam from the cathode over the surface of the anode. A rotating anode tube lasts a lot longer than a stationary x-ray tube.
The purpose of rotating the X-ray tube target is to?
The x-ray tube target is rotated to reduce wear and tear on the anode and to keep the anode from overheating.
The em value of cathode rays is always constant but the em value of positive rays is not constant why?
Anode rays differ from cathode rays in several aspects and their specific charge(charge/mass or e/m ratio) is an important feature. The reason lies in how anode rays are produced. Anode rays are produced when a gas at low pressure is subjected to a high voltage(10,000 Volts). Under these conditions, the atoms of the gas get ionized, i.e. they lose some electrons and thus become cations(positive ions). It is a stream of these positive ions that become 'anode rays'. However, the atomic masses of different gases are different and hence, the mass of anode ray particles varies when you use different gases in the discharge tube and hence, the charge/mass ratio also varies. Whereas, in the case of cathode rays, the cathode ray particles are nothing but electrons. Their charge and mass is constant no matter what gas you use in the discharge tube. So, their charge/mass ratio remains constant. (ANSWER BY RIZWAN FROM PAKISTAN)
What is the source of electrons in the x-ray tube?
The cathode of an electron gun.
Why is the x-ray tube considered an inefficient device?
In X-ray tubes, electrons are emitted from a cathode source to a anode target through a process called thermionic emission. Electrons are then accelerated towards the anode target via a potential energy difference between the cathode and anode. The interaction between the accelerated electrons and atoms in the anode target causes the emission of X-ray. Efficiency of the X-ray tube is impaired by the kinetic energy of the accelerated electrons being loss as heat and only 1% of the remaining energy is used to emit X-ray.
How are cathod rays produced?
when the cathode filament emits the electron and because of the high vaccum inside the tube with a high voltage who is applied on anode (the destination) the electron will accelerate to the anode and the anode will emits the x-ray photon directly after strike of the mentioned electron. the power of x-ray or peneration is determined of the anode high voltage.
In cathode ray tube cathode and anode rays travel opposite to each other but they are not neutralized. why?
There is no such thing as anode rays. The cathode rays (aka electron beam) just travels from cathode to anode.
