Photometer for far ultraviolet band airglow detection and detection method thereof
A photometer and band technology, which is applied in thermosphere airglow detection, planetary, space-borne far-ultraviolet band earth ionosphere, and deep space detection, can solve the problems of large data errors and saturation of instrument detection results during the day, and achieve narrow bandwidth , High-precision detection, high-efficiency effect
Pending Publication Date: 2022-02-22
NAT SPACE SCI CENT CAS
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[0010] TIP adopts this method to ensure the high sensitivity of the instrument, which is reflected immediately after the instrument is turned on; but what follows is that the detection results of the instrument are saturated during the day, and the detection at night is affected by the scattering of moonlight, resulting in large data errors
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[0045] The present invention will be further described below in conjunction with specific examples.
[0046] The object of the application of the present invention is the 135.6nm small-sized ionospheric photometer developed by the Space Center of the Chinese Academy of Sciences, such as Figure 3-10 As shown, the instrument reflects the atmospheric radiation at a height of 100-800km into the interior of the instrument through its front off-axis parabolic reflector (coated with a 135.6nm band-pass reflective film). , through a piece of 0.5mm thick vacuum ultraviolet grade BaF 2 The crystal window long-wave pass filter filters out short-wave radiation below 130nm and reaches the photomultiplier tube of the CsI cathode. The field of view of the instrument is 3.5°*1.6°. The measurement results are shown in Figure 9 and Figure 10 , Figure 9 is the spectral response curve of the instrument itself, Figure 10 In order to bring into the actual airglow radiation distribution cha...
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Abstract
The invention relates to a photometer for far ultraviolet band airglow detection and a detection method thereof. The photometer comprises an off-axis parabolic mirror, a transmission-type band-pass optical filter, a long-wave-pass optical filter and a photomultiplier tube, and the off-axis parabolic mirror, the transmission-type band-pass optical filter, the long-wave-pass optical filter and the photomultiplier tube are arranged in sequence; the surface of the off-axis parabolic mirror is coated with a far ultraviolet band-pass reflecting film; the substrate material of the transmission-type band-pass optical filter is MgF2 crystal or LiF2 crystal, the surface of the MgF2 crystal or LiF2 crystal is coated with multiple layers of films, and the film materials of the multiple layers of films are Al and MgF2; and the long-wave-pass optical filter is a BaF2 crystal window. The photometer can realize all-day and high-sensitivity detection on 135.6 nm airglow radiation, so that the high sensitivity of the instrument is ensured, the high out-of-band rejection ratio and narrow-band measurement are ensured, and the acquisition of high-precision detection data is ensured.
Description
technical field [0001] The invention relates to the field of space-borne far-ultraviolet band airglow detection of the earth, thermosphere airglow detection, planetary and deep space detection, and specifically relates to a photometer for far-ultraviolet band airglow detection and a detection method thereof. Background technique [0002] Far ultraviolet (1000A-2000A) optical remote sensing is to obtain space environment parameters such as O, N 2 , O 2 It is also an important detection technology for information such as the density and profile distribution of neutral atmospheric atomic and molecular columns, ionospheric electron density TEC, electron density profile, plasma content, atmospheric temperature profile, solar EUV flux, and energetic particle deposition. One of the potential space weather detection methods. [0003] The ionosphere is formed by the ionization of the atmosphere due to the interaction of solar extreme ultraviolet rays and X-rays and high-energy part...
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IPC IPC(8): G01J3/02G01J3/28G01N21/33
CPCG01J3/0208G01J3/0227G01J3/0259G01J3/28G01N21/33
Inventor 付利平贾楠王天放彭如意肖思付建国白雪松李睿智
Owner NAT SPACE SCI CENT CAS