Examination of the Flow of High Speed and Thermal Neutrons (BTN-Neutron-Radiation-ISS) - 07.15.14

Overview | Description | Applications | Operations | Results | Publications | Imagery
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BTN-Neutron-Radiation-ISS is an external facility that measures the exposure of ISS to neutron and gamma radiation that come from solar flares. This device helps researchers to improve current on-orbit radiation models and examine the complete radiation dose the astronauts and cosmonauts receive during EVAs.

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The following content was provided by I G. Mitrofanov, Ph.D., and is maintained in a database by the ISS Program Science Office.

Experiment Details

OpNom

Principal Investigator(s)

  • I G. Mitrofanov, Ph.D., Institute for Space Research, Moscow, Russia

  • Co-Investigator(s)/Collaborator(s)
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    Developer(s)
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    Sponsoring Space Agency
    Russian Federal Space Agency (Roscosmos)

    Sponsoring Organization
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    Research Benefits
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    ISS Expedition Duration
    September 2006 - September 2013

    Expeditions Assigned
    14,15,16,17,18,19/20,21/22,23/24,25/26,27/28,29/30,31/32,33/34,35/36

    Previous ISS Missions
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    Experiment Description

    Research Overview
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    Description

    Building a physical model for generation of charged and neutral particles during solar flares. Developing a physical model of neutron albedo of the earth atmosphere with regard to helio- and geophysical environment, measurement point longitude and altitude effects, time of the day and lighting conditions, atmosphere conditions. Developing a physical model of neutron background in the vicinity of the ISS in different flight conditions, as well as recording space gamma bursts.

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    Applications

    Space Applications
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    Earth Applications
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    Operations

    Operational Requirements
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    Operational Protocols

    Electronics unit BTN-ME; Spare BTN; BTN unit.

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    Results/More Information

    Experimental spectrometric investigations of neutron fields on the ISS will: clarify the on-orbit radiation environment models; clarify neutron source models in near-earth space environment and evaluate their contribution in a complete radiation dose received by cosmonauts during EVA; obtain data on high-energy neutron fluxes with energies up to 16 MeV coming from powerful solar flares with regard to albedo radiation of the Earth. Build an operational model of neutron background environment on the station. Clarify existing solar activity models. Obtain data on fluxes of rigid electromagnetic space rays component.

    Measurement data on spatial and time distributions of radiation characteristics of space ionizing radiation (neutron and gamma components) outside the Service Module of the ISS RS; Correlation data on radiation environment parameters outside the Service Module of the ISS RS obtained through calculation with the results of measurements made by science hardware BTN-M1 and results of other Russian and international experiments. Measurement data on solar flare parameters in neutron and gamma range.

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    Results Publications

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    Ground Based Results Publications

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    ISS Patents

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    Related Publications

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    Related Websites
    Coordinating Scientific and Technical Council of the Russian Space Agency [Russian]
    Energia - Science Research on the ISS Russian Segment

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    Imagery

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    BTN ground test units. Image courtesy FSA.


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    Prelaunch image of BTN hardware attached to external handrail mounting device.


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    BTN-Neutron map illistrating the measured neutron flux environment as see from Earth orbit.


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    The BTN-Neutron facility installed on the external surface of the ISS Service Module.


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