Indeed, Takahashi’s design was first developed for use on Japan’s Hitomi mission, which was an ill-fated space telescope that launched in 2016. As a result, Compton cameras have played an important role in gamma-ray astronomy. By measuring many such interactions, the source of a beam of gamma rays can be pinpointed to the intersection of the circles. By using position information from the detection of both of these events, the source of the incident gamma ray can be traced back to a circle in space. The photon is then absorbed by the second layer. The process begins with a gamma-ray photon inelastically (Compton) scattering from the first layer. Recently, new opportunities for high-quality measurements have come from a multilayer cadmium–telluride Compton camera design that was first developed by Tadayuki Takahashi and colleagues at the University of Tokyo.Ī Compton camera comprises at least two layers of material that interact with, and detect, gamma rays. However, making accurate measurements of gamma-ray polarization is no easy task. These studies involve determining both the spin and parity of nuclei, which can be done by measuring the polarization of the emitted gamma rays. Transitions between these states often involve the emission of gamma-ray photons and the study of these photons provides important information about the internal structure of nuclei – a discipline called nuclear spectroscopy. Much like electrons in an atom or molecule, these protons and neutrons can exist in a number of distinct energy states – often associated with different shapes of the nucleus. Webinars Tune into online presentations that allow expert speakers to explain novel tools and applicationsĪn atomic nuclei contains protons and neutrons that are bound together by the strong force.Video Watch our specially filmed videos to get a different slant on the latest science.

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