Zobrazeno 1 - 9
of 9
pro vyhledávání: '"R. K. Kirschman"'
Autor:
Murzy D. Jhabvala, L. W. Huff, R. K. Kirschman, John A. Lipa, S. Wang, S. Babu, N. Das, Dz-Hung Gwo, K.A. Bower
Publikováno v:
Le Journal de Physique IV. :Pr3-181
Integrated photodiodes and silicon JFET preamps are used for the optical readout of the Gravity Probe B cryogenic star tracking telescope. The heated circuit assembly is mounted on a thermal isolator so that it can be heated to around 80 K while the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b81ce5e8b7cc86e4e33b99e8409887dc
https://doi.org/10.1051/jp4:1998339
https://doi.org/10.1051/jp4:1998339
Autor:
John A. Lipa, R. K. Kirschman
Publikováno v:
SPIE Proceedings.
Low-frequency, low-noise, low-power cryogenic electronics to read out photodetectors is being investigated for the star-tracking telescope of the Gravity Probe B spacecraft. We report additional results in evaluating low-frequency '1/f' noise of comm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::042a180a3a0873e3f8c6f1b8e4776717
https://doi.org/10.1117/12.158687
https://doi.org/10.1117/12.158687
Publikováno v:
SPIE Proceedings.
We describe the status of the development and testing program for the inertial reference system for the Gravity Probe B gyroscopes. The gyroscope housings are attached to a cryogenic telescope with a 14 cm aperture that continuously points at a guide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7afa8eb3b6e17182cc4284cc83f8b67b
https://doi.org/10.1117/12.140876
https://doi.org/10.1117/12.140876
Publikováno v:
SPIE Proceedings.
Low-frequency, low-noise, low-power cryogenic electronics to read out photodetectors is being investigated for the star-tracking telescope of the Gravity Probe B spacecraft. We report our initial findings from evaluating more than 20 types of GaAs FE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c26eaf1e66367eb34985b4f07517a211
https://doi.org/10.1117/12.60500
https://doi.org/10.1117/12.60500
Publikováno v:
Czechoslovak Journal of Physics. 46:2733-2734
We report the test results of the prototype telescope which is part of a system that provides the inertial reference frame for Gravity Probe B. The fused silica star-tracking telescope, which has an effective focal length of 3.8 m at room temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f12a7140a539db6cda34124d495fbde4
https://doi.org/10.1007/bf02570353
https://doi.org/10.1007/bf02570353
Autor:
R. K. Kirschman
Publikováno v:
Journal of Low Temperature Physics. 11:235-242
Measurements have been made of the ac response of the Notarys-Mercereau thin-film, weakly superconducting structure. Data on the maximum constant-voltage step size and the absolute amplitude of the applied signal necessary to achieve the maximum in s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bc61ef03844ad3f8a85f9e7cc6728d7
https://doi.org/10.1007/bf00655047
https://doi.org/10.1007/bf00655047
Autor:
R. K. Kirschman
Publikováno v:
The Physics Teacher. 9:451-453
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2edfff117ed9e7685a668bdcb6daf4bb
https://doi.org/10.1119/1.2351814
https://doi.org/10.1119/1.2351814
Publikováno v:
Scopus-Elsevier
We report on initial development of new Ge JFETs for deep cryogenic (liquid-helium range) operation. Both p- and n-channel Ge JFETs were fabricated. Due to unsatisfactory epitaxial growth, the p-channel JFETs do not exhibit usable characteristics. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50185f560957b1d3cf58f025dfe558f9
http://www.scopus.com/inward/record.url?eid=2-s2.0-0032089915&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-0032089915&partnerID=MN8TOARS
Autor:
R. K. Kirschman
Publikováno v:
The Physics Teacher. 8:399-400
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8e2109b8c3309368d5bc6f526828c2c
https://doi.org/10.1119/1.2352662
https://doi.org/10.1119/1.2352662