Harlan,

I agree with Joe. After thinking about possible ways to do a comparison, I have come up empty.

Best,

Larry

From: Crater-team [mailto:crater-team-bounces@lists.sr.unh.edu] On Behalf Of Harlan Spence
Sent: Tuesday, March 19, 2019 11:39 AM
To: Joseph E Mazur
Cc: crater-team@lists.sr.unh.edu
Subject: Re: [Crater-team] Fwd: Apollo 8 and 12 experiments

THanks, Joe - I concur. An interesting bit of history, though!

________________________________

Harlan E. Spence

Director, Institute for the Study of Earth,

Oceans, & Space and Prof. of Physics
Morse Hall, Room 306
University of New Hampshire

8 College Road

Durham, NH 03824-3525

Phone: 603-862-0322

Fax: 603-862-1915

http://www.eos.unh.edu/Faculty/Spence
________________________________

On Mar 14, 2019, at 10:10 AM, Joseph E Mazur <joseph.e.mazur@aero.org> wrote:

Harlan, I don’t see a direct comparison because of the threshold LET in the plastic compared to the energy range of CRaTER.

The Science paper states they are sensitive to Ne ionization above 7 MeV/n incident, but that means lower incident energy than CRaTER can detect for heavies.

Our track experts might have another view.

Here's the relevant figure from the lexan reference in the Science paper:

<image001.png>

Best regards,

Joe

J. E. Mazur
The Aerospace Corporation
Principal Director, Space Science Applications Laboratory

Chantilly office: A101/N5228

El Segundo office: A6/2403A

Mailing address:

CH1-515

14301 SullyField Circle, Unit C
Chantilly, VA 20151-1622

Primary phone: 571-304-7587

Mobile: 571-643-4991

Email: joseph.e.mazur@aero.org

From: Crater-team <crater-team-bounces@lists.sr.unh.edu> on behalf of Harlan Spence <spence@guero.sr.unh.edu>
Date: Thursday, March 14, 2019 at 9:20 AM
To: "crater-team@lists.sr.unh.edu" <crater-team@lists.sr.unh.edu>
Subject: [Crater-team] Fwd: Apollo 8 and 12 experiments

All,

Here is a link to the paper we discussed at yesterday’s CRaTER telecon. Please let me know if you have any thoughts on if/how we might/should compare these Apollo era radiation measurements with ours.

Thanks, Harlan