[Isocops] Fwd: Deep Space Radiation Warning (Flux change)
Nathan Schwadron
nschwadron at guero.sr.unh.edu
Mon Sep 30 07:28:20 EDT 2013
Hi All
We are in the midst of a moderate space weather event.
Code Yellow.
Nathan
Begin forwarded message:
> From: msq at prediccs-web.sr.unh.edu (Marty Quinn)
> Subject: Deep Space Radiation Warning (Flux change)
> Date: September 30, 2013 1:45:01 AM EDT
> To: n.schwadron at unh.edu
>
> ***** NOTE: This flux message service is under active development. The message format may change. *****
>
> Flux rate increased from level 2 ( > 0.100 ) to level 3 ( > 1.000 ) (range in J( 6.5 MeV), ions / (s * sr * cm 2 * MeV)).
>
> --------------
> Flux at Earth
> --------------
> 2.644 J( 2.5 MeV), ions / (s * sr * cm 2 * MeV)
> 1.513 J( 6.5 MeV), ions / (s * sr * cm 2 * MeV)
> 0.501 J( 11.6 MeV), ions / (s * sr * cm 2 * MeV)
> 0.163 J( 30.6 MeV), ions / (s * sr * cm 2 * MeV)
> 0.035 J( 63.1 MeV), ions / (s * sr * cm 2 * MeV)
> 0.004 J( 165.0 MeV), ions / (s * sr * cm 2 * MeV)
> 0.001 J( 433.0 MeV), ions / (s * sr * cm 2 * MeV)
> --------------
> Flux at Mars
> --------------
> 0.297 J( 2.5 MeV), ions / (s * sr * cm 2 * MeV)
> 0.179 J( 6.5 MeV), ions / (s * sr * cm 2 * MeV)
> 0.085 J( 11.6 MeV), ions / (s * sr * cm 2 * MeV)
> 0.023 J( 30.6 MeV), ions / (s * sr * cm 2 * MeV)
> 0.005 J( 63.1 MeV), ions / (s * sr * cm 2 * MeV)
> 0.000 J( 165.0 MeV), ions / (s * sr * cm 2 * MeV)
> 0.000 J( 433.0 MeV), ions / (s * sr * cm 2 * MeV)
>
> -------------------------------------------------------
> Dose, Dose Equivalent Rates & Cumulative Dose at Earth
> -------------------------------------------------------
> ----
> Key:
> ----
> DoseRateEarth = Dose Rate at Earth in cGy/day
> CumDoseEarth = 5-Day Cumulative Dose at Earth in cGy
> DoseEquivRateEarth = Dose Equivalent Rate at Earth in cSv/day
> CumDoseEquivEarth = 5-Day Cumulative Dose Equivalent at Earth in cSv
> Proxies:
> 1. H2O 1g/cm2 (skin)
> 2. H2O 10g/cm2 (organ)
>
> Shielding
> DoseRateEarth CumDoseEarth DoseEquivRateEarth CumDoseEquivEarth
>
> Al 0.3g/cm2 (spacesuit)
> 1. 1.258 1.194 2.031 1.830
> 2. 0.124 0.549 0.185 0.829
>
> Al 1g/cm2 (nominal spacecraft)
> 1. 0.815 1.052 1.295 1.607
> 2. 0.121 0.540 0.181 0.817
>
> Al 5g/cm2 (thick spacecraft)
> 1. 0.210 0.713 0.322 1.111
> 2. 0.106 0.489 0.160 0.748
>
> Al 10g/cm2 (storm shelter)
> 1. 0.133 0.573 0.206 0.914
> 2. 0.092 0.440 0.141 0.682
>
> ----
> Key:
> ----
> DoseRateMars = Dose Rate at Mars in cGy/day
> CumDoseMars = 5-Day Cumulative Dose at Mars in cGy
> DoseEquivRateMars = Dose Equivalent Rate at Mars in cSv/day
> CumDoseEquivMars = 5-Day Cumulative Dose Equivalent at Mars in cSv
> Proxies:
> 1. H2O 1g/cm2 (skin)
> 2. H2O 10g/cm2 (organ)
>
> Shielding
> DoseRateMars CumDoseMars DoseEquivRateMars CumDoseEquivMars
>
> Al 0.3g/cm2 (spacesuit)
> 1. 0.170 0.103 0.274 0.154
> 2. 0.015 0.025 0.021 0.036
>
> Al 1g/cm2 (nominal spacecraft)
> 1. 0.109 0.084 0.173 0.124
> 2. 0.014 0.024 0.021 0.035
>
> Al 5g/cm2 (thick spacecraft)
> 1. 0.026 0.039 0.040 0.058
> 2. 0.012 0.020 0.018 0.030
>
> Al 10g/cm2 (storm shelter)
> 1. 0.016 0.027 0.024 0.040
> 2. 0.010 0.017 0.016 0.026
>
> Please take appropriate precautions.
> For more information, please visit http://prediccs.sr.unh.edu/
> PREDICCS Radiation Alarm Notification System for Flux Change
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