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SUMMARY:Kelsey Morgan: Hot science with cool sensors
DESCRIPTION:The transition-edge sensor (TES) microcalorimeter uses the sharply temperature-dependent resistance of the superconducting transition to measure the energy of X-ray and gamma ray photons. A single TES is a broadband\, energy-dispersive area detector capable of eV-scale energy resolution with good quantum efficiency. With an array of hundreds or thousands of sensors\, a TES-based spectrometer can have orders of magnitude higher throughput than wavelength dispersive instruments. In this talk\, I will introduce the basic principles of TES operation\, and discuss how they are exploited to design sensors with resolving power R > 1000 at a wide range of photon energies\, from soft X-rays to gamma rays. This capability makes the TES a powerful tool for PFY-XAFS\, RIXS\, and time-resolved XES/XAS measurements\, particularly for weak sources or for highly dilute or radiation-sensitive samples. I will provide a brief overview of the TES spectrometers that are currently available to the X-ray science community\, and then highlight some exciting new instruments that are currently under development. \nhttps://physicstoday.scitation.org/doi/full/10.1063/PT.3.3995
URL:https://xrayabsorption.org/events/journalclub-kelsey-morgan/
CATEGORIES:XAFS Journal Club
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