Gaston,
The EMP is a very wild beast. One of the first tests where effects were to
be measured was a test named Starfish. It fired a bomb about 200 miles above
Johnson Island (do not know how far on the side). As result, parts of Hawaii
lost electricity and no one expected that. A nuclear caused EMP is always
associated with high altitude shots. I am not sure, but it looks like lack
of atmosphere is important, possibly not to attenuate charged particle flux.
I do not think that any of Nevada tests had significant EMP, most of them
were underground. My understanding was that instruments were physically
destroyed, through shock. I guess, thumper in the hole bought time to
transmit out data.
Regards
Miroslav Pokorni
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----- Original Message -----
From: "ghpicard" <ghpicard@...>
To: <TekScopes@...>
Sent: Tuesday, January 22, 2002 6:52 AM
Subject: [TekScopes] Re: Digitizer on eBay
--- In TekScopes@y..., "Miroslav Pokorni" <mpokorni2000@y...> wrote:
I believe that those digitizers were used to measure all sorts of
parameters
during test, so a number of them was consumed for a single test. My
understanding was that they were lowered down the hole, but somehow
digitizers lived until data was transmitted to a safe location. I
remember
I think it's more probable that the units could reliabily withstand
just one EMP, so why to risk a second EMP with a total data loss when
you could buy a new one...
If the unit become damaged *during* the test, the data, if you could
recover anything at all, would be either garbage or unreliable at all.
Memory circuits (except perhaps ferrite cores) are most sensitive to
gamma rad. Anyway, if using ferrite cores, the M part of the EMP
could make a nice mess with the contents...
Regards
Gaston
