Extended Line Spread Function of TES Microcalorimeters With Au/Bi Absorbers

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dc.contributor.authorEckart, Megan E.
dc.contributor.authorAdams, Joseph S.
dc.contributor.authorBandler, Simon R.
dc.contributor.authorBeaumont, Sophie
dc.contributor.authorChervenak, James A.
dc.contributor.authorDatesman, Aaron M.
dc.contributor.authorFinkbeiner, Fred M.
dc.contributor.authorHummatov, Ruslan
dc.contributor.authorKelley, Richard L.
dc.contributor.authorKilbourne, Caroline A.
dc.contributor.authorLeutenegger, Maurice A.
dc.contributor.authorMiniussi, Antoine R.
dc.contributor.authorMoseley, Samuel J.
dc.contributor.authorPorter, F. Scott
dc.contributor.authorSadleir, John E.
dc.contributor.authorSakai, Kazuhiro
dc.contributor.authorSmith, Stephen J.
dc.contributor.authorWakeham, Nicholas
dc.contributor.authorWassell, Edward J.
dc.date.accessioned2022-01-20T15:15:14Z
dc.date.available2022-01-20T15:15:14Z
dc.date.issued2019-03-06
dc.description.abstractMicrocalorimeters have the potential to provide line shapes well described by a single Gaussian broadening term of few-eV width. This attribute makes the detectors especially well suited for x-ray astrophysics observations; however, low-level non-Gaussian broadening terms are expected and must be characterized. These terms depend on the composition of the x-ray absorber, the detailed x-ray absorption physics, the device thermalization processes, and the incident x-ray energy. Here we present the first measurements targeted at understanding the extended line-spread function (LSF) of x-ray microcalorimeter pixels under development for the X-ray Integral Field Unit on the Athena X-ray Observatory. These pixels are composed of Mo/Au transition-edge sensors with overhanging electroplated Au/Bi absorbers. We have measured the line shapes using monochromatic x-ray sources with <1-eV width at several x-ray energies (0.85, 0.93, 1.25, 1.5, 5.4, and 8.0 keV) across the instrument bandpass (0.3–12 keV) and have modeled the line profiles. These results are compared to the extended LSF of the Hitomi microcalorimeter pixels that used HgTe absorbers.en_US
dc.description.urihttps://ieeexplore.ieee.org/abstract/document/8661601en_US
dc.format.extent5 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2cndt-ge0y
dc.identifier.citationM. E. Eckart et al., "Extended Line Spread Function of TES Microcalorimeters With Au/Bi Absorbers," in IEEE Transactions on Applied Superconductivity, vol. 29, no. 5, pp. 1-5, Aug. 2019, Art no. 2101205, doi: 10.1109/TASC.2019.2903420.en_US
dc.identifier.urihttps://doi.org/10.1109/TASC.2019.2903420
dc.identifier.urihttp://hdl.handle.net/11603/24026
dc.language.isoen_USen_US
dc.publisherIEEEen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Physics Department
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleExtended Line Spread Function of TES Microcalorimeters With Au/Bi Absorbersen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-2237-6696en_US
dcterms.creatorhttps://orcid.org/0000-0002-9247-3010en_US
dcterms.creatorhttps://orcid.org/0000-0003-4096-4675en_US
dcterms.creatorhttps://orcid.org/0000-0001-8397-9338en_US

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