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Dual Nature of Matter and Radiation
Dual Nature of Matter and Radiation

... 2. Equation (1) shows that the photoelectrons with greater value of maximum kinetic energy will come out of the metal surface, when the frequency of incident radiation is increased. Since the equation (1) does not involve the term of intensity so the maximum kinetic energy does not depend upon the i ...
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Presentation

UMX-164-D16-G 数据资料DataSheet下载
UMX-164-D16-G 数据资料DataSheet下载

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... desirable to complete the adiabatic passage as quickly as possible. But, as the passage time becomes shorter, non-adiabatic e€ects are introduced. While non-adiabaticity is not a decoherence e€ect, it can of course cause the coherent transfer to fail, and it can cause the system to become more susce ...
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Electricity - people.vcu.edu

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Template Title - University of Oklahoma Physics

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... available, mercury has many energy levels above the lowest energy level. The mean free path for collisions is much shorter than the distance between the cathode and grid. Therefore if the electrons gain enough energy to excite the mercury this will be very likely to occur. At low accelerating voltag ...
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... c. Excitation conditions (kV and mA settings): the higher the power that is available, the more sensitively we can analyze the elements of interest. Tube power can vary from a few Watts to a few 1000s of Watts. The power of the X-ray tube is divided between a variable voltage (mostly expressed as kV ...
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UW Physics PhD. Qualifying Exam Spring 2008, problem 11

PHY 2140 – Sp/Su 2007 - Wayne State University Physics and
PHY 2140 – Sp/Su 2007 - Wayne State University Physics and

... 12. A simple circuit consists of a resistor R, an inductor L, a battery and a switch that is initially open but then thrown closed. Immediately after the switch is thrown closed, the current in the circuit is ...
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LC Oscillator

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Klystron



A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television transmitters, satellite communication, and radar transmitters, and to generate the drive power for modern particle accelerators.In the klystron, an electron beam interacts with the radio waves as it passes through resonant cavities, metal boxes along the length of the tube. The electron beam first passes through a cavity to which the input signal is applied. The energy of the electron beam amplifies the signal, and the amplified signal is taken from a cavity at the other end of the tube. The output signal can be coupled back into the input cavity to make an electronic oscillator to generate radio waves. The gain of klystrons can be high, 60 dB (one million) or more, with output power up to tens of megawatts, but the bandwidth is narrow, usually a few percent although it can be up to 10% in some devices.A reflex klystron is an obsolete type in which the electron beam was reflected back along its path by a high potential electrode, used as an oscillator.The name klystron comes from the stem form κλυσ- (klys) of a Greek verb referring to the action of waves breaking against a shore, and the suffix -τρον (""tron"") meaning the place where the action happens. The name ""klystron"" was suggested by Hermann Fränkel, a professor in the classics department at Stanford University when the klystron was under development.
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