Hello—

                I processed the last six months of CRaTER quiet-time triples data into an LET spectrum and updated the plot from the 2020 paper, which I attach to this email along with a version zoomed in on the peak of the spectrum.  Intensity continues to decline rapidly as we move toward solar maximum, as seen in the dose time series also attached.  I mentioned on the telecon Wednesday that I am going to pull out one clean triples proton energy channel at higher time resolution, and several for alphas, after I get the albedo-simulations paper(s) done; I’m also going to be producing proton and alpha channels covering the same energy ranges from the SAMPEX PET sensor (1992-2009) that overlap a few months with the LRO mission, so I should be able to offer an intercalibrated time series spanning 30+ years after that.  I hope to get this all done late this year.

Thanks—

--Mark

Mark D. Looper, PhD
Space Sciences Department
The Aerospace Corporation
M/S M2-260
P.O. Box 92957
Los Angeles, CA 90009-2957
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Voicemail: 310-336-6302
Publications: https://www.loopers.org/curvitae.html