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Space is a hostile environment. No atmosphere, extreme variations in temperature and almost no energy sources, where even the slightest of mistakes can lead to a disaster. The vast emptiness of space is filled with radiation, mostly from the sun. A normal computer unless given proper shielding will not be able to work properly. Thus special types of chips- rad hard chips are used.

Radiation hardened chips are made by two methods: - Radiation hardening by process (RHBP) and Radiation hardening by design (RHBD). The latter method is much more cost effective and has a great potential for the future. . It has been demonstrated that RHBD techniques can provide immunity from total-dose and single-event effects in commercially produced circuits. Commercially produced RHBD memories, microprocessors, and application-specific integrated circuits are now being used in defense&space industry. Rad hard chips have a great scope in military application and protecting critical data (both industrial &domestic) from the vagaries of man and nature.

Current trends throughout military and space sectors favor the insertion of commercial off-the-shelf (COTS) technologies for satellite applications. However, there are also unique concerns for assuring reliable performance in the presence of ionizing particle environments which present concerns in all orbits of interest. This seminars will detail these concerns from two important perspectives including premature device failure from total ionizing dose and also single particle effects which can cause both permanent failure and soft errors.
Post: #2
plz give me the full report
Post: #3
Radiation hardening is a method of designing and testing electronic components and systems to make them resistant to damage or malfunctions caused by high-energy subatomic particles and electromagnetic radiation[1], such as would be encountered in outer space, high-altitude flight, around nuclear reactors, or during warfare.

Most radiation-hardened chips are based on their commercial equivalents, with some manufacturing and design variations that reduce the susceptibility to interference from electromagnetic radiation. Due to the extensive development and testing required to produce a radiation-tolerant design of a microelectronic chip, radiation-hardened chips tend to lag behind the cutting-edge of developments.

and read more
Post: #4
i want more about Radiation Hardened Chips
Post: #5
please visit these links for more details in this topic:

Post: #6

Thermal radiation.:
”That electromagnetic radiation emitted by a body as a result of its temperature”.

Thermal radiation is restricted to a limited range of the electromagnetic spectrum.

Blackbody radiation
A blackbody is a perfect radiator.
Three characteristics:
• It absorbs all incident radiation
• It radiates more energy than any real surface at the same temperature
• The emitted radiation is independent of direction
Blackbody radiation obey certain simple laws

Stefan-Boltzmann’s law
The total power radiated from a blackbody is calculated from Stefan-Boltzmann´s law:
Eb = σ⋅T4
where Eb = total power radiated per unit area from
a blackbody (W/m2)
σ = 5.669 ⋅ 10-8 W/(m2⋅K4). (Stefan-Boltzmann
T = absolute temperature (K)

Planck distribution law
The wavelength distribution of emitted blackbody radiation is determined from the Planck distribution law:
where C1 = 2π⋅h⋅co2 = 3.742⋅108 W⋅μm4 / m2
C2 = (h⋅co / k) =1.439 ⋅ 104 μm K
λ = wavelength (μm)
T = absolute temperature (T)
h = Planck constant

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Post: #7
to get information about the topic "radiation hardend chips " full report ppt and related topic refer the link bellow
Post: #8
hi please i need documentation on radiation hardened chips pleaseeeeeeee
Post: #9
(18-10-2009 10:54 AM)abypallu Wrote:  plz give me the full report

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