Pioneering New Filters for X-ray Astrophysics

Metadata Updated: November 12, 2020

The x-ray microcalorimeter is fundamentally a thermal sensor and as such is sensitive to all forms of electromagnetic and particle radiation. To optimize such a device for use as an x-ray spectrometer, it is therefore necessary to block all forms of radiation that are not in the x-ray energy band (typically 0.1-10 keV). If not blocked, radiation with energy lower than the x-ray band would contribute numerous, un-resolved photons, thereby adding noise and degrade the energy resolution. This requirement has been generally solved by placing a series of thin metalized films between the sensor and the outside world of the instrument. The problem is, in order to manufacture films thick enough to be robust, the transmission in the lower energy part of the x-ray band almost lost. To get around this problem, we propose a completely new type of x-ray filter that will have a net transmission efficiency of ~ 40 - 60% all across the soft x-ray band between 0.1 and 1.0 keV, which will provide up to a 100-fold increase in soft x-ray transmission in this energy band over existing filters.  We plan to produce filters with holes so small that longer wavelength photons are unable to propagate through, whereas the shorter wavelength x-ray photons simply pass through the holes unimpeded. This type of filter is called a "grill filter" and the desired functionality is possible due to the large separation in frequency between the block and pass bands.

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Publisher Space Technology Mission Directorate
Unique Identifier Unknown
Identifier TECHPORT_11955
Data First Published 2014-09-01
Data Last Modified 2020-01-29
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Homepage URL
Program Code 026:027
Source Datajson Identifier True
Source Hash ce4a7efaee21f0b8cffa73e17d5e15f9f74c44d8
Source Schema Version 1.1

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