J
James R. Lemen
Researcher at Advanced Technology Center
Publications - 154
Citations - 19560
James R. Lemen is an academic researcher from Advanced Technology Center. The author has contributed to research in topics: Solar flare & Flare. The author has an hindex of 42, co-authored 154 publications receiving 18011 citations.
Papers
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Proceedings ArticleDOI
Next-generation EUV imaging spectrometer for solar flare observations
J. Daniel Moses,Guenter E. Brueckner,Kenneth P. Dere,Clarence M. Korendyke,Norman E. Moulton,D. K. Prinz,John F. Seely,Dennis G. Socker,Marilyn E. Bruner,James R. Lemen +9 more
TL;DR: In this article, two sets of two identical, orthogonally mounted slitless spectrographic Cassegrain telescopes are used to obtain high time cadence, spectrally dispersed images with improved spatial resolution, dynamic range, signal-to-noise ratio, and velocity discrimination.
Proceedings ArticleDOI
X-ray calibration of a virtual phase 1024 x 1024 CCD
Richard C. Catura,James R. Lemen,Mons D. Morrison,David L. Windt,Willard C. Jordan,Loren W. Acton +5 more
TL;DR: In this paper, a front-illuminated virtual phase CCD with a 1024 x 1024 pixel array was calibrated with X-ray and visible-light X-rays as part of the Solar-A preparation for a launch in August 1991.
Journal ArticleDOI
Coordinated soft X-ray and Hα observations of solar flares
TL;DR: In this paper, the authors analyzed a unique set of four solar flares for which coordinated soft X-ray Ca XIX and Hα spectral observations were obtained during the impulsive phase.
Journal ArticleDOI
A Solar Flare Observed with the Smm and Einstein Satellites
TL;DR: In this paper, the authors presented X-ray observations of the 21 July, 1980 solar flare which was observed both with the Einstein Observatory Imaging Proportional Counter (IPC) and the X-Ray Polychromator (XRP) and Gamma-Ray Spectrometer onboard the SMM satellite.