Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Jeffrey S. Hull"'
Autor:
Oswald H. W. Siegmund, John V. Vallerga, Nathan T. Darling, Travis L. Curtis, Jason B. McPhate, Jeffrey S. Hull, Till Cremer, Camden Ertley, Michael Foley, Michael Minot, Gillean Graves, catriana Paw U, Casey Vo
Publikováno v:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI.
We present recent progress in the development of novel microchannel plates (MCPs) manufactured using standard lead glass and with borosilicate glass microcapillary arrays functionalized using Atomic Layer Deposition (ALD) technology. Standard glass M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f07645a3a9a56741f1c55f7593f2cfe6
https://doi.org/10.1117/12.2529897
https://doi.org/10.1117/12.2529897
Autor:
Sharon R. Jelinsky, Jorg Fischer, Kwang-Il Seon, Jang-Hyun Park, Seung-Han Oh, Raymond T. Chung, Jeffrey S. Hull, Uk-Won Nam, J. G. Rhee, Wonyong Han, J. Adolfo, Dae-Hee Lee, Kwangsun Ryu, Jong-Ho Shinn, Michael Feuerstein, Ken McKee, K. Nishikida, In-Soo Yuk, Jerry Edelstein, Eric J. Korpela, Peter Berg, Mark Bowen, Kyoung-Wook Min, Ho Jin
Publikováno v:
The Astrophysical Journal. 644:L159-L162
The SPEAR (or 'FIMS') instrumentation has been used to conduct the first large-scale spectral mapping of diffuse cosmic far ultraviolet (FUV, 900-1750 AA) emission, including important diagnostics of interstellar hot (10^4 K - 10^6 K) and photoionize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d19b3dce062270e7bf71a371f1346d6
https://doi.org/10.1086/505205
https://doi.org/10.1086/505205
Autor:
Oswald H. W. Siegmund, Jason B. McPhate, Amir M. Dabiran, John V. Vallerga, Jeffrey W. Elam, Jeffrey S. Hull, Anton S. Tremsin, Anil U. Mane
Publikováno v:
SPIE Proceedings.
The optimization and performance of opaque Galium Nitride (GaN) photocathodes deposited directly on novel Microchannel Plates (MCPs) are presented in this paper. The novel borosilicate glass MCPs, which are manufactured with the help of Atomic Layer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c1f0ee1f20bf7263ecef60e518a2c99
https://doi.org/10.1117/12.2025185
https://doi.org/10.1117/12.2025185
Publikováno v:
Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray.
Gallium nitride opaque and semitransparent photocathodes provide high ultraviolet quantum efficiencies from 100 nm to a long wavelength cutoff at ~380 nm. P (Mg) doped GaN photocathode layers ~100 nm thick with a barrier layer of AlN (22 nm) on sapph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3869817030fc856a85f57c02ba231dbc
https://doi.org/10.1117/12.857863
https://doi.org/10.1117/12.857863
Autor:
James Malloy, Amir M. Dabiran, Anton S. Tremsin, Andrew M. Wowchak, Peter Chow, Oswald H. W. Siegmund, Jeffrey S. Hull
Publikováno v:
SPIE Proceedings.
Epitaxial growth of p-type GaN-based UV photocathode by RF plasma assisted molecular beam epitaxy (MBE) on sapphire, fused silica, and alumina substrates was investigated. The electrical measurements indicted the growth of highly p-type GaN films as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d790fb5ec267c1675ae36936fef99a07
https://doi.org/10.1117/12.809503
https://doi.org/10.1117/12.809503
Autor:
James Malloy, Oswald H. W. Siegmund, Jason B. McPhate, John V. Vallerga, Amir M. Dabiran, Jeffrey S. Hull, Anton S. Tremsin
Publikováno v:
SPIE Proceedings.
Recent progress in Gallium Nitride (GaN, AlGaN, InGaN) photocathodes show great promise for future detector applications in Astrophysical instruments. Efforts with opaque GaN photocathodes have yielded quantum efficiencies up to 70% at 120 nm and cut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dfee27ff736b4322e48173709eafbd9
https://doi.org/10.1117/12.790076
https://doi.org/10.1117/12.790076
Autor:
Martin M. Sirk, Michael Lampton, Jeffrey S. Hull, Ken McKee, Mario Marckwordt, Geoffrey A. Gaines, Richelieu Hemphill, T. P. Sasseen, Mark Hurwitz, Oswald H. W. Siegmund, E. Taylor, Michael Sholl, Jerry Edelstein
Publikováno v:
UV/EUV and Visible Space Instrumentation for Astronomy II.
We describe the design and development of the CHIPS microchannel plate detector. The Cosmic Hot Interstellar Plasma Spectrometer will study the diffuse radiation of the interstellar medium in the extreme ultraviolet band pass of 90a to 260a. Astronom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0636ac8d2af295e99968acbed9164d0
https://doi.org/10.1117/12.512279
https://doi.org/10.1117/12.512279
Autor:
J. G. Rhee, Peter Berg, Wonyong Han, Eric J. Korpela, Dae-Hee Lee, Kyung-Wook Min, Jerry Edelstein, Jeffrey S. Hull, Uk-Won Nam, Ho Jin
Publikováno v:
SPIE Proceedings.
The SPEAR (Spectroscopy of Plasma Evolution from Astrophysical Radiation) mission to map the far ultraviolet sky uses micro-channel plate (MCP) detectors with a crossed delay line anode to record photon arrival events. SPEAR has two MCP detectors, ea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3929cd75c087c47d8f7fadb42869f610
https://doi.org/10.1117/12.460018
https://doi.org/10.1117/12.460018
Autor:
Barry Y. Welsh, Raymond Chung, Kyung-Wook Min, Kwang-Il Seon, Eric J. Korpela, Jeffrey S. Hull, Michael Feuerstein, Mark Bowen, Ho Jin, Uk-Won Nam, K. Nishikida, Dae-Hee Lee, J. G. Rhee, Peter Berg, In-Soo Yuk, Kwangsun Ryu, Wonyong Han, Jerry Edelstein
Publikováno v:
SPIE Proceedings.
The SPEAR micro-satellite payload consists of dual imaging spectrographs optimized for detection of the faint, diffuse FUV (900-1750 a) radiation emitted from interstellar gas. The instrument provides spectral resolution, R~750, and long slit imaging
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7de3f7ca2c6ffeda5d6b7afb55e1712
https://doi.org/10.1117/12.459970
https://doi.org/10.1117/12.459970
Autor:
Joseph M. Stock, James Malloy, Darrel L. Doliber, Oswald H. W. Siegmund, Patrick N. Jelinsky, Sharon R. Jelinsky, Jeffrey S. Hull
Publikováno v:
SPIE Proceedings.
We will describe the development of the design and processing of the near ultraviolet (NUV, 1800 - 3000A) and far ultraviolet (FUV, 1350 - 1800A) sealed tube microchannel plate (MCP) cross delay line (XDL) detectors for the NASA Galaxy Evolution Expl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd19b6665fb76cb51c2558737ef5fd8d
https://doi.org/10.1117/12.394022
https://doi.org/10.1117/12.394022