Hard X-ray Photoelectric Polarimeter

Metadata Updated: May 2, 2019

Our objective is to determine the gas mixtures and pressures that would enable a sensitive, hard X-ray polarimeter using existing flight components[HTML_REMOVED]with the goal of making astrophysical measurements using the InFOC[HTML_REMOVED]S hard X-ray optics on a long duration balloon flight (future proposal following successful demonstration). Photoelectric allows high sensitivity, low systematics polarization measurements, and photoelectric absorption remains the dominant interaction at energies up to 50-100 keV for many intermediate Z absorbers (Figure 1).[HTML_REMOVED] NASA and GSFC have made substantial investments in the Time Projection Chamber polarimeter proposed for GEMS and PRAXyS. As PRAXyS was ultimately not selected for flight development, we propose to capture the investment and modify the PRAXyS proto-flight detectors to operate from ~10-50 keV using an Argon based mixture as the active gas.[HTML_REMOVED] The broad outline is to measure the characteristics of Argon based mixtures, retrofit the PRAXyS detectors for high pressure operation, and prepare for a balloon flight using the InFocus balloon payload to pave the way to a dedicated mission.[HTML_REMOVED]

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

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Dates

Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_93229
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id b948665f-adb8-405c-91b0-85cad570bbf6
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2018-09-01
Homepage URL https://techport.nasa.gov/view/93229
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash bcb373b4ee85ab254eca1df7e8d8f2926e53bae0
Source Schema Version 1.1

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