Difference between revisions of "Radiation"
(→Danger: radiation sickness) |
(Effect on material, External links) |
||
| Line 5: | Line 5: | ||
Nevertheless, there are defined legal limits for exposure during work for several professional activities, such as for X-ray assistants, airplane personnel, etc. | Nevertheless, there are defined legal limits for exposure during work for several professional activities, such as for X-ray assistants, airplane personnel, etc. | ||
| + | |||
| + | ==Effect on material== | ||
| + | Radiation can change the properties of [[plastics]] and metals, making them brittle after a period of time. | ||
==Protection== | ==Protection== | ||
| − | [[House]]s should be equipped with a shielding, thick enough to reduce the radiation to a level equal to Earth, that is, almost zero. Best protection may be | + | [[House]]s should be equipped with a shielding, thick enough to reduce the radiation to a level equal to Earth, that is, almost zero. Best protection may be achieved with houses built in natural [[caves]] or set into cliffs or hillsides. |
| − | [[Space suit]]s must be designed with radiation in mind. The suit should provide adequate shielding for the occupant. It may be | + | [[Space suit]]s must be designed with radiation in mind. The suit should provide adequate shielding for the occupant. It may be necessary to design suits with several grades of protection. Suits designed for short-term use can carry lighter shielding which would reduce weight and improve maneuverability. |
==Open issues== | ==Open issues== | ||
| Line 15: | Line 18: | ||
*What is the required thickness of a [[regolith]] or [[water]] layer upon a house for radiation shielding? | *What is the required thickness of a [[regolith]] or [[water]] layer upon a house for radiation shielding? | ||
*What are the legal limits for radiation exposure for some professional activities? | *What are the legal limits for radiation exposure for some professional activities? | ||
| + | |||
| + | ==External links== | ||
| + | *[http://www.ips.gov.au/ IPS:] [http://www.ips.gov.au/Category/Educational/Space%20Weather/Space%20Weather%20Effects/guide-to-space-radiation.pdf A Guide to Space Radiation] | ||
| + | *[http://www.niauk.org/radiation-and-safety.html Nuclear Industry Association: Radiation, health and nuclear safety] | ||
| + | |||
[[Category:Hazards]] | [[Category:Hazards]] | ||
Revision as of 07:58, 8 August 2008
Natural Radiation on Mars is much higher compared with Earth. The thin atmosphere provides only a small shielding effect against harmful solar radiation and cosmic radiation. Mars also lacks the magnetosphere that protects Earth.
Danger
Exposure to dangerous levels of radiation causes radiation sickness and cancer. Any exposure to radiation, no matter how slight, poses some risk. Small dose - small risk of cancer. High dose - high risk of cancer.
Nevertheless, there are defined legal limits for exposure during work for several professional activities, such as for X-ray assistants, airplane personnel, etc.
Effect on material
Radiation can change the properties of plastics and metals, making them brittle after a period of time.
Protection
Houses should be equipped with a shielding, thick enough to reduce the radiation to a level equal to Earth, that is, almost zero. Best protection may be achieved with houses built in natural caves or set into cliffs or hillsides.
Space suits must be designed with radiation in mind. The suit should provide adequate shielding for the occupant. It may be necessary to design suits with several grades of protection. Suits designed for short-term use can carry lighter shielding which would reduce weight and improve maneuverability.
Open issues
- How much higher is the UV and cosmic radiation?
- What is the required thickness of a regolith or water layer upon a house for radiation shielding?
- What are the legal limits for radiation exposure for some professional activities?
