Search results
Results from the WOW.Com Content Network
The United States sent teams to the International Young Physicists' Tournament several times in the 2000s, and achieved a second-place finish in 2005. [1] The nonprofit United States Association for Young Physicists Tournaments was incorporated in 2005, initially for the purpose of supporting and training the US team as well as to spread the pedagogical methodology of preparing and conducting ...
The side-on design is used, for instance, in the type 931, the first mass-produced PMT. Besides the different photocathode materials, performance is also affected by the transmission of the window material that the light passes through, and by the arrangement of the dynodes. Many photomultiplier models are available having various combinations ...
Scintillation counters are widely used in radiation protection, assay of radioactive materials and physics research because they can be made inexpensively yet with good quantum efficiency, and can measure both the intensity and the energy of incident radiation.
The International Physicists' Tournament (IPT) is a physics competition for undergraduate students, bachelors or master level (or equivalent), in which students representing their nation and institution have typically 9 months to solve a set of challenging unsolved physics problems, then present and defend them to other teams. [1]
Until 2012, the All India Pre-Medical Test (AIPMT) was conducted by the Central Board of Secondary Education (CBSE). In 2013, NEET-UG was introduced, conducted by CBSE, replacing AIPMT. However, due to legal challenges, NEET was temporarily replaced by AIPMT in both 2014 and 2015. In 2016, NEET was reintroduced and conducted by CBSE.
A scintillation detector or scintillation counter is obtained when a scintillator is coupled to an electronic light sensor such as a photomultiplier tube (PMT), photodiode, or silicon photomultiplier. PMTs absorb the light emitted by the scintillator and re-emit it in the form of electrons via the photoelectric effect. The subsequent ...
As a result, the SNR (Signal-to-noise ratio) for a fixed number of detected photons can be higher than that from a PMT. Conversely, the stochastic gain of a PMT typically requires more detected photons to obtain the same SNR. Mass production of silicon electronics by multiple vendors allows SiPMs to be made very cheaply relative to vacuum tubes.
A photomultiplier is a device that converts incident photons into an electrical signal.. Kinds of photomultiplier include: Photomultiplier tube, a vacuum tube converting incident photons into an electric signal.