Hypervelocity particle impact studies performed on a gold-coated beryllium substrate mirror

James B. Heaney; John C. Pearl; Martin A. Stuebig; Liqin L. Wang; Charles C. He

doi:10.1117/12.552236

12 October 2004 Hypervelocity particle impact studies performed on a gold-coated beryllium substrate mirror

James B. Heaney, John C. Pearl, Martin A. Stuebig, Liqin L. Wang, Charles C. He

Proceedings Volume 5487, Optical, Infrared, and Millimeter Space Telescopes; (2004) https://doi.org/10.1117/12.552236
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

This paper presents the results of the hypervelocity projectile bombardment of a gold-coated beryllium substrate telescope mirror. Individual latex (ρ = 1.1 g/cm³) and iron (7.9 g/cm³) projectiles, in the size range 0.70 to 1.44μm (avg. mass = 0.24 - 7.1 x 10^-15 kg), representative of interplanetary dust, with velocities from 2 - 20 km/s, created impact craters in the composite mirror structure that were approximate hemispheres. The ratio of impact damage diameter to projectile energy was found experimentally to be close to 0.1μm/nJ for both latex and iron projectiles. These dimension data, combined with recent measurements of interplanetary and interstellar dust fluxes, can be used to estimate expected space telescope mirror surface damage and scattering increase due to hypervelocity dust impacts.

Citation Download Citation

James B. Heaney, John C. Pearl, Martin A. Stuebig, Liqin L. Wang, and Charles C. He "Hypervelocity particle impact studies performed on a gold-coated beryllium substrate mirror", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); https://doi.org/10.1117/12.552236

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available