Examination of the Flow of High Speed and Thermal Neutrons (BTN-Neutron-Radiation-ISS) - 08.12.15

Overview | Description | Applications | Operations | Results | Publications | Imagery

ISS Science for Everyone

Science Objectives for Everyone
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.
Science Results for Everyone
Superman battled Neutron; astronauts battle neutrons. To improve calculations of how much radiation crew members are exposed to during extravehicular activity, researchers took measurements outside the space station. Their findings indicate that radiation amounts vary significantly depending on the station’s orbital position. Taking into account differing levels of solar activity, new data confirm the increase of cosmic radiation and harmful neutron during periods of low solar activity.

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., Space Research Institute RAS, Moscow, Russia

Co-Investigator(s)/Collaborator(s)
Information Pending

Developer(s)
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Sponsoring Space Agency
Russian Federal Space Agency (Roscosmos)

Sponsoring Organization
Information Pending

Research Benefits
Information Pending

ISS Expedition Duration 1
September 2006 - September 2014

Expeditions Assigned
14,15,16,17,18,19/20,21/22,23/24,25/26,27/28,29/30,31/32,33/34,35/36,37/38,39/40

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
Information Pending

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

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Results Publications

    Mitrofanov IG, Litvak ML, Tretyakov VI, Mokrousov MI, Malakhov AV, Vostrukhin AA.  Neutron components of radiation environment in the near-Earth and near-Mars space. Planetary and Space Science. 2009 December; 57(14-15): 1993-1995. DOI: 10.1016/j.pss.2009.08.005.

    Baranov DG, Gagarin YF, Dergachev VA, Nymmik RA, Panasyuk MI.  Results of measuring the fluxes of solar energetic particles and methods of their interpretation. Cosmic Research. 2011; 49(6): 469-476. DOI: 10.1134/S0010952511060013.

    Tretyakov VI, Fedosov F, Kozyrev AS, Litvak ML, Lyagushin VI.  Space experiment 'BTN-Neutron" on Russian segment of International Space Station. 16th Workshops on Radiation Monitoring for the International Space Station, Prague, Czeck Republic; 2011 September 6-8

    Lyagushin VI, Kozyrev AS.  Measurements of neutron environment inside and outside of ISS. 15th Workshop on Radiation Monitoring for the International Space Station, Monte Porzio Catone, Italy; 2010

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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
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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