Physics
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nimpa.422..577f&link_type=abstract
Nuclear Instruments and Methods in Physics Research Section A, Volume 422, Issue 1-3, p. 577-581.
Physics
2
Scientific paper
The X-ray proportional counters on board the Near Earth Asteroid Rendezvous (NEAR) spacecraft have exhibited a resolution degradation and recovery phenomenon several times during the long cruise phase of the mission. The resolution is checked periodically by commanding an 55Fe source into the window area. The degradation is seen as a low energy tailing of the 5.9keV photopeak. Two events have occurred which provided good spectral data for better understanding the degradation phenomenon. In November /1997 a large solar particle event occurred that degraded the resolution and excited copper in the collimator. Eventually the detectors returned to normal. In January /1998 the spacecraft performed an Earth swingby gravity assist maneuver. The near Earth environment excited the magnesium and aluminum in the filter elements. The copper line was also produced. The NEAR spacecraft was launched in February /1996 and will rendezvous and orbit the asteroid 433 Eros in early /1999.
Clark Pamela E.
Floyd Samuel R.
Goldsten John O.
Leidecker H. W.
Roth David Richard
No associations
LandOfFree
Radiation effects on the proportional counter X-ray detectors on board the NEAR spacecraft does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Radiation effects on the proportional counter X-ray detectors on board the NEAR spacecraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiation effects on the proportional counter X-ray detectors on board the NEAR spacecraft will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-947092