Mass spectrometric investigations of the atmosphere between 100 and 227 kilometers above Wallops Island, Virginia

Meadows-Reed, Edith; Smith, Charles R.

doi:10.1029/jz069i015p03199

Cited by 16 publications

(3 citation statements)

References 6 publications

(3 reference statements)

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“…There is a tendency for this ratio to approach I at heights just below 100 km on both up and downleg, but downleg data indicate that 30 + becomes dominant again below this region. This result differs from some earlier midday results (Holmes et al, 1965, Johnson, 1916, Narcisi, 1968 which show regions where i30+]/[32+] becomes less than one but agrees with others not exhibiting this behavior (Taylor and Brinton, 1961, Meadows-Reed and Smith, 1964, Arnold et al, 1969.…”

Section: B E and F Region Resultscontrasting

confidence: 57%

Positive ion composition from a rocket-borne mass spectrometer

Goldberg¹,

Blumle²

1970

J. Geophys. Res.

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On March 15, 1968, at 1411 LMT, a Nike Tomahawk was launched from Wallops Island, Virginia, carrying a quadrupole mass spectrometer for measurements of positive ion composition in the ionosphere. The instrument was enclosed in a vacuum system principally controlled by a titanium getter pump and marks the first attempt to use this technique for rocket experiments. A CW radio propagation experiment plus ground‐based ionosonde results enabled the reduction of the data to absolute values. On upleg, the spectrometer was opened at 98 km and provided well‐resolved spectra in the ram direction up to an apogee of 303 km, slightly above the F2 peak. The sweep range from 13 to 49 amu enabled all major constituents to be determined, and the high sensitivity of the spectrometer allowed many minor constituents, having densities as low as 2‐5/cm³, to be detected. On downleg, measurements were restricted to wake composition, but values obtained at higher altitudes were similar to those seen on upleg. Upon entry into the D region, the vacuum system permitted spectra to be obtained to 68 km. D‐region results between 80 and 68 km show a predominance of 19+ and 37+ ions, possibly due to complex water clusters, marking the first independent observation in agreement with the earlier results of others.

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Section: B E and F Region Resultscontrasting

confidence: 57%

Positive ion composition from a rocket-borne mass spectrometer

Goldberg¹,

Blumle²

1970

J. Geophys. Res.

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“…We have recorded the ionograms corresponding to the trace vapors of different 4B. We have estimated that the limit of detection for TNT is ~1*10 -13 g/cm 3 .…”

Section: Resultsmentioning

confidence: 99%

“…The first installation of the mass spectrometer on the aircraft dates back to the 50-th, when Bennett radio frequency mass spectrometers where installed on the sounding rockets and artificial satellites and were used for the investigation of the ionic composition of the upper atmosphere [1][2][3] . Further development of the field resulted in the introduction of more complicated aircraft-borne mass spectrometers designed for specific purposes: aerosol mass spectrometers 4 , dust impact mass analyzer 5 etc.…”

mentioning

confidence: 99%

Remote detection of explosives using field asymmetric ion mobility spectrometer installed on multicopter

Kostyukevich

Efremov

Ionov³

et al. 2017

J Mass Spectrom

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The detection of explosives and drugs in hard-to-reach places is a considerable challenge. We report the development and initial experimental characterization of the air analysis system that includes Field Asymmetric Ion Mobility Spectrometer, array of the semiconductor gas sensors and is installed on multicopter. The system was developed based on the commercially available DJI Matrix 100 platform. For data collection and communication with operator, the special compact computer (Intel Compute Stick) was installed onboard. The total weight of the system was 3.3 kg. The system allows the 15-minute flight and provides the remote access to the obtained data. The developed system can be effectively used for the detection of impurities in the air, ecology monitoring, detection of chemical warfare agents, and explosives, what is especially important in light of recent terroristic attacks. The capabilities of the system were tested on the several explosives such as trinitrotoluene and nitro powder.

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A study of the composition of the lower solar corona

Nakada

1969

Sol Phys

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Mass spectrometric investigations of the atmosphere between 100 and 227 kilometers above Wallops Island, Virginia

Cited by 16 publications

References 6 publications

Positive ion composition from a rocket-borne mass spectrometer

Positive ion composition from a rocket-borne mass spectrometer

Remote detection of explosives using field asymmetric ion mobility spectrometer installed on multicopter

A study of the composition of the lower solar corona

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