Výsledky vyhledávání - "P. R. Higbie"

What Voyager cosmic ray data in the outer heliosphere tells us about10Be production in the Earth's polar atmosphere in the recent past

Autor: W. R. Webber, P. R. Higbie

Publikováno v: Journal of Geophysical Research: Space Physics. 115

[1] Voyager measurements of the galactic proton and Helium nuclei spectra beyond the heliospheric termination shock and out to ∼110 AU seem to imply lower interstellar cosmic ray intensities of these nuclei than previously estimated. Using new inte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d5a365ae7f0b2afaa54615611b939b4
https://doi.org/10.1029/2009ja014532

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Galactic propagation of cosmic ray nuclei in a model with an increasing diffusion coefficient at low rigidities: A comparison of the new interstellar spectra with Voyager data in the outer heliosphere

Autor: P. R. Higbie, W. R. Webber

Publikováno v: Journal of Geophysical Research: Space Physics. 114

[1] Using both a Monte Carlo Diffusion Model and a Leaky Box Model for propagation in the galaxy, we have determined the interstellar spectra of H, He, and heavier nuclei with emphasis on energies below ∼1–2 GeV nucleon−1. This calculation uses

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::968a56c3f6a4d34104598cfe8f221ed3
https://doi.org/10.1029/2008ja013689

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Limits on the interstellar cosmic ray electron spectrum below ∼1-2 GeV derived from the galactic polar radio spectrum and constrained by new Voyager 1 measurements

Autor: P. R. Higbie, W. R. Webber

Publikováno v: Journal of Geophysical Research: Space Physics. 113

[1] Using a Monte Carlo Diffusion Model for electron propagation in the Galaxy we have calculated new electron spectra below 1–2 GeV that reproduce the observed polar galactic nonthermal radio synchrotron spectrum above ∼4 MHz where absorption ef

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe437ca884a0232542e7db61c05d74f3
https://doi.org/10.1029/2008ja013386

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Relativistic magnetospheric electrons: Lower ionospheric conductivity and long-term atmospheric variability

Autor: J. B. Blake, David J. Gorney, R. W. Klebesadel, D. D. Sentman, P. R. Higbie, Daniel N. Baker

Publikováno v: Advances in Space Research. 10:229-233

Long-term (1979–88) observations of relativistic electrons in the earth's outer magnetosphere show a strong solar cycle dependence with a prominent intensity maximum during the approach to solar minimum (1983–85). This population therefore corres

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93f09bf4e919f5d1f266678592b6febd
https://doi.org/10.1016/0273-1177(90)90036-y

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Production of the cosmogenic isotopes3H,7Be,10Be, and36Cl in the Earth's atmosphere by solar and galactic cosmic rays

Autor: Ken McCracken, P. R. Higbie, W. R. Webber

Publikováno v: Journal of Geophysical Research: Space Physics. 112

[1] In a follow-up study to the earlier work of Webber and Higbie (2003) on 10Be production in the Earth's atmosphere by cosmic rays, we have calculated the atmospheric production of the cosmogenic isotopes 3H, 7Be, 10Be, and 36Cl using the FLUKA Mon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b99d92d08f43836b97000c51823716b
https://doi.org/10.1029/2007ja012499

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Production of cosmogenic Be nuclei in the Earth's atmosphere by cosmic rays: Its dependence on solar modulation and the interstellar cosmic ray spectrum

Autor: W. R. Webber, P. R. Higbie

Publikováno v: Journal of Geophysical Research. 108

Recent work by McCracken [2001] shows that 10 Be production rates by cosmic rays on the polar plateau are little affected by geomagnetic field changes in the last few hundred years. Also, the 10 Be observed in ice cores on the polar plateau probably

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a86b9185f7360d5cbe48a5bcb13e287e
https://doi.org/10.1029/2003ja009863

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Burst Detector X-Ray IIR

Autor: P. R. Higbie, R. C. Reedy, R. P. Vigil, K. M. Spencer, F. Guyker

The Burst Detector X-Ray (BDX) instrument for the Block IIR series of Global Positioning System satellites is described. The BDX instrument can locate and characterize exoatmospheric nuclear detonations by using four sensors consisting of sets of fil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91a6369b43ffb02dd37610610ceef8fa
https://doi.org/10.2172/663195

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The utility of diamond sensors for space flight

Autor: P. R. Higbie, S. S. Han, R. S. Wagner

Los Alamos National Laboratory has developed diamond sensors with interdigitated electrodes that operate in a photoconducting mode. The specific application for this work was for the Department of Energy`s instruments flown on the Global Positioning

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75811dee3eb65624e378f4f85ffac670
https://doi.org/10.2172/211374

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A determination of the charge state of energetic magnetospheric ions by the observation of drift echoes

Autor: Daniel N. Baker, P. R. Higbie, Joseph F. Fennell, R. D. Belian, J. B. Blake

Publikováno v: Geophysical Research Letters. 10:1211-1214

The mean charge states of heavy ions trapped in the earth's magnetosphere are important parameters for distinguishing among magnetospheric theories. No direct measurements have been made at energies greater than ∼ 50 keV. A technique, which uses th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b32af3f5e59c9d8f06400a552dacdfd7
https://doi.org/10.1029/gl010i012p01211

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