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  • 1
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    An Introduction to Space Instrumentation (2013)
    Tokyo : TERRAPUB
    Details
    Description / Table of Contents: In-situ density measurements in the mesosphere/lower thermosphere region with the TOTAL and CONE instruments / Boris Strelnikov, Markus Rapp, and Franz-Josef Lübkin / pp. 1-11. doi:10.5047/aisi.001 --- Atomic oxygen measurement by resonance lamp / N. Iwagami and W. H. Morrow / pp. 13-16. doi:10.5047/aisi.002 --- Nitric oxide measurement by self-absorbing gas cell / N. Iwagami / pp. 17-20. doi:10.5047/aisi.003 --- Imaging attitude finder for a sounding rocket and magnesium ion imager for airglow spatial pattern / N. Iwagami, Y. Koizumi-Kurihara, and J. Kurihara / pp. 21-24. doi:10.5047/aisi.004 --- Airglow photometers on board sounding rockets / B. R. Clemesha, H. Takahashi, A. Eras, N. B. Lisboa, and D. Gobbi / pp. 25-31. doi:10.5047/aisi.005 --- N2 Temperature of Vibration instrument for sounding rocket observation in the lower thermosphere / J. Kurihara, N. Iwagami, and K.-I. Oyama / pp. 33-39. doi:10.5047/aisi.006 --- Foil chaff ejection systems for sounding rocket measurements of neutral winds in the mesopause region / Yoshiko Koizumi-Kurihara, Junichi Kurihara, Yasuhiro Murayama, and Koh-Ichiro Oyama / pp. 41-46. doi:10.5047/aisi.007 --- Wind measurements: Trimethyl aluminum (TMA) chemical release technique / M. F. Larsen / pp. 47-51. doi:10.5047/aisi.008 --- Rocket-borne Lithium ejection system for neutral wind measurement / Hiroto Habu, Masa-yuki Yamamoto, Shigeto Watanabe, and Miguel F. Larsen / pp. 53-61. doi:10.5047/aisi.009 --- Langmuir probe / Takumi Abe and Koh-ichiro Oyama / pp. 63-75. doi:10.5047/aisi.010 --- Rocket-borne Langmuir probe for plasma density irregularities / H. S. S. Sinha / pp. 77-90. doi:10.5047/aisi.011 --- Electron temperature probe / K.-I. Oyama and C. Z. Cheng / pp. 91-105. doi:10.5047/aisi.012 --- Impedance probe technique to detect the absolute number density of electrons on-board spacecraft / M. Wakabayashi, T. Suzuki, J. Uemoto, A. Kumamoto, and T. Ono / pp. 107-123. doi:10.5047/aisi.013 --- Resonance cone probe for measuring electron density, temperature, drift speed and beam components / A. Piel / pp. 125-138. doi:10.5047/aisi.014 --- Retarding Potential Analyzer (RPA) for Sounding Rocket / H. K. Fang and C. Z. Cheng / pp. 139-153. doi:10.5047/aisi.015 --- Electric field instrument onboard Japanese sounding rockets / K. Ishisaka / pp. 155-163. doi:10.5047/aisi.016 --- Magnetic Field Measurement (MFM) and Sun Aspect Sensor (SAS) / Takao Takahashi / pp. 165-179. doi:10.5047/aisi.017 --- Designing a toroidal top-hat energy analyzer for low-energy electron measurement / Y. Kazama / pp. 181-192. doi:10.5047/aisi.018 --- Low energy particle spectrometer for 3-axis stabilized spacecraft / Yoshifumi Saito / pp. 193-202. doi:10.5047/aisi.019 --- Imaging thermal ion mass and velocity analyzer / Andrew W. Yau, E. Peter King, Peter Amerl, Kaare Berg, Greg Enno, Andrew Howarth, Ivan Wevers, and Andrew White / pp. 203-215. doi:10.5047/aisi.020 --- Development of fluxgate magnetometers and applications to the space science missions / A. Matsuoka, M. Shinohara, Y.-M. Tanaka, A. Fujimoto, and K. Iguchi / pp. 217-225. doi:10.5047/aisi.021 --- Plasma wave receivears for scientific satellites / H. Kojima / pp. 227-237
    Pages: Online-Ressource (VIII, 240 Seiten)
    ISBN: 9784887041608
    URL: http://www.terrapub.co.jp/onlineproceedings/ste/aisi/
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Fast particle destabilization of toroidicity-induced Alfvén eigenmodes in the National Spherical Torus Experiment (2000)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 7 (2000), S. 1433-1436 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Toroidicity-induced Alfvén eigenmode (TAE) stability in the National Spherical Torus Experiment (NSTX) [S. M. Kaye, M. Ono, Y.-K. M. Peng et al., Fusion Technol. 36, 16 (1999)] is analyzed using the improved NOVA-K code [N. N. Gorelenkov, C. Z. Cheng, and G. Y. Fu, Phys. Plasmas 6, 2802 (1999)], which includes finite orbit width and Larmor radius effects and is able to predict the saturation amplitude for the mode using the quasilinear theory. A broad spectrum of unstable global TAEs with different toroidal mode numbers is predicted. Due to the strong poloidal field and the presence of the magnetic well in NSTX, better particle confinement in the presence of TAEs in comparison with tokamaks is illustrated making use of the ORBIT code [R. B. White and M. S. Chance, Phys. Fluids 27, 2455 (1984)]. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.873961
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  • 3
    Electronic Resource
    Electronic Resource
    Fast particle finite orbit width and Larmor radius effects on low-n toroidicity induced Alfvén eigenmode excitation (1999)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 6 (1999), S. 2802-2807 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effects of finite drift orbit width (FOW) and Larmor radius (FLR) of fast particles on the stability of low-n toroidicity-induced Alfvén eigenmodes (TAE) are studied. The formulation is based on the solution of the low frequency gyrokinetic equation (ω(very-much-less-than)ωc, where ωc is particle cyclotron frequency). A quadratic form has been derived in terms of invariant variables; energy E, magnetic moment μ, and toroidal angular momentum Pcursive-phi. The growth rate of the TAE is computed perturbatively using numerical averaging over the fast particle drift orbit. This new computational capability improves the NOVA-K code [G. Y. Fu, C. Z. Cheng, and K. L. Wong, Phys. Fluids B 5, 4040 (1994)] which included FOW effects in the growth rate calculation based on small radial orbit width approximation. The new NOVA-K version has been benchmarked for different regimes of particle TAE excitation. It is shown that both FOW and FLR effects are typically stabilizing; the TAE growth rate can be reduced by as much as a factor of 2 for tokamak fusion test reactor supershots [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985)]. However, FOW may be destabilizing for the global modes, which are localized at the plasma edge. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.873545
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  • 4
    Electronic Resource
    Electronic Resource
    Toroidal Alfvén eigenmodes in TFTR deuterium–tritium plasmas : The 39th annual meeting of division of plasma physics of APS (1998)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 1703-1711 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Purely alpha-particle-driven toroidal Alfvén eigenmodes (TAEs) with toroidal mode numbers n=1–6 have been observed in deuterium–tritium (D–T) plasmas on the tokamak fusion test reactor [D. J. Grove and D. M. Meade, Nucl. Fusion 25, 1167 (1985)]. The appearance of mode activity following termination of neutral beam injection in plasmas with q(0)〉1 is generally consistent with theoretical predictions of TAE stability [G. Y. Fu et al. Phys. Plasmas 3, 4036 (1996)]. Internal reflectometer measurements of TAE activity is compared with theoretical calculations of the radial mode structure. Core localization of the modes to the region of reduced central magnetic shear is confirmed, however the mode structure can deviate significantly from theoretical estimates. The peak measured TAE amplitude of δn/n∼10−4 at r/a∼0.3−0.4 corresponds to δB/B∼10−5, while δB/B∼10−8 is measured at the plasma edge. Enhanced alpha particle loss associated with TAE activity has not been observed. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.872818
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  • 5
    Electronic Resource
    Electronic Resource
    Excitation of Alfvén cyclotron instability by charged fusion products in tokamaks (1995)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 2 (1995), S. 1961-1971 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The spectrum of ion cyclotron emission (ICE) observed in tokamak experiments shows narrow peaks at multiples of the edge cyclotron frequency of background ions. A possible mechanism of ICE based on the fast Alfvén Cyclotron Instability (ACI) resonantly excited by high energy charged products (α-particles or protons) is presented here. Two-dimensional eigenmode analysis of ACI mode structure and eigenfrequency are obtained in the large tokamak aspect ratio limit. The ACI is excited via wave-particle resonances in phase space by tapping the fast ion velocity space free energy. The instability growth rates are computed perturbatively from the perturbed fast particle distribution function, which is obtained by integrating the high frequency gyrokinetic equation along the particle orbit. Numerical examples of ACI growth rates are presented for Tokamak Fusion Test Reactor (TFTR) [World Survey of Activities in Controlled Fusion Research [Nuclear Fusion special supplement 1991] (International Atomic Energy Agency, Vienna, 1991)] supershot plasmas. The fast ion distribution function is assumed to be singular in pitch angle near the plasma edge. The results are employed to understand the ICE in Deuterium-Deuterium (DD) and Deuterium-Tritium (DT) tokamak experiments. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871281
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  • 6
    Electronic Resource
    Electronic Resource
    Analysis of alpha particle-driven toroidal Alfvén eigenmodes in Tokamak Fusion Test Reactor deuterium–tritium experiments (1996)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 3 (1996), S. 4036-4045 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The toroidal Alfvén eigenmodes (TAE) are calculated to be stable in the presently obtained deuterium–tritium plasmas in the Tokamak Fusion Test Reactor (TFTR) [Plasma Phys. Controlled Nucl. Fusion Res. 26, 11 (1984)]. However, the core localized TAE mode can exist and is less stable than the global TAE modes. The beam ion Landau damping and the radiative damping are the two main stabilizing mechanisms in the present calculation. In future deuterium–tritium experiments, the alpha-driven TAE modes are predicted to occur with a weakly reversed shear profile. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871537
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  • 7
    Electronic Resource
    Electronic Resource
    HINST: A two-dimensional code for high-n toroidicity induced Alfvén eigenmodes stability (1998)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 3389-3397 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A high-n stability code, HINST, has been developed to study the stability of TAE (toroidicity induced Alfvén eigenmodes) in large tokamaks such as the International Thermonuclear Experimental Reactor (ITER) [D. E. Post, Plasma Physics and Controlled Nuclear Fusion Research (International Atomic Energy Agency, Vienna, 1991), Vol. 3, p. 239] where the spectrum of unstable TAE modes is shifted toward medium to high-n modes. The code solves the two-dimensional (2-D) eigenmode problem by expanding the eigenfunction in terms of basis functions. Based on the Fourier-ballooning formalism the eigenmode problem is reduced to a system of coupled one-dimensional equations, which is solved numerically by using the finite element method. The numerical method allows one to include nonperturbatively nonideal effects such as: finite ion Larmor radius, trapped electron collisional damping, etc. The 2-D numerical results of TAE and resonance TAE (RTAE) modes are compared with those from local ballooning calculations and the global magnetohydrodynamic nonvariational code NOVA [C. Z. Cheng and M. S. Chance, J. Comput. Phys. 71, 124 (1987)]. The results show that for ITER-like plasma parameters, TAE and RTAE modes can be driven unstable by alpha particles for n=10–20. The growth rate for the most unstable mode is within the range γ/ωA(similar, equals)0.3%–1.5%. The most unstable modes are localized near r/a(similar, equals)0.5 and have a broad radial mode envelope width. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.873052
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  • 8
    Electronic Resource
    Electronic Resource
    Alpha particle effects on the internal kink and fishbone modes (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 3369-3377 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effects of alpha particles on the internal kink and fishbone modes are studied analytically. The nonadiabatic contribution from untrapped alpha particles is negligible. Finite inverse aspect ratio, plasma β, and plasma shaping effects can significantly enhance the trapped particle drift reversal domain in the pitch angle space and reduce the bounce-averaged magnetic drift frequency. The decrease of the drift magnitude and drift reversal effects on the ideal kink mode is small, but the βα threshold for the fishbone mode can be much lower than previously predicted [B. Coppi, S. Migliuolo, F. Pegoraro, and F. Porcelli, Phys. Fluids B 2, 927 (1990)]. Moreover, the fishbone mode could be excited by alpha particles, even when the plasma is stable in the ideal magnetohydrodynamic (MHD) limit. In addition, the ion diamagnetic drift frequency (finite ion Larmor radius effect) has a strong destabilizing effect on the fishbone mode when it is comparable with the trapped alpha-averaged precessional drift frequency, even though it stabilizes the plasma in the ideal MHD limit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870485
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  • 9
    Electronic Resource
    Electronic Resource
    Fusion plasma experiments on TFTR: A 20 year retrospective : The 39th annual meeting of division of plasma physics of APS (1998)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 1577-1589 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Tokamak Fusion Test Reactor (TFTR) (R. J. Hawryluk, to be published in Rev. Mod. Phys.) experiments on high-temperature plasmas, that culminated in the study of deuterium–tritium D–T plasmas containing significant populations of energetic alpha particles, spanned over two decades from conception to completion. During the design of TFTR, the key physics issues were magnetohydrodynamic (MHD) equilibrium and stability, plasma energy transport, impurity effects, and plasma reactivity. Energetic particle physics was given less attention during this phase because, in part, of the necessity to address the issues that would create the conditions for the study of energetic particles and also the lack of diagnostics to study the energetic particles in detail. The worldwide tokamak program including the contributions from TFTR made substantial progress during the past two decades in addressing the fundamental issues affecting the performance of high-temperature plasmas and the behavior of energetic particles. The progress has been the result of the construction of new facilities, which enabled the production of high-temperature well-confined plasmas, development of sophisticated diagnostic techniques to study both the background plasma and the resulting energetic fusion products, and computational techniques to both interpret the experimental results and to predict the outcome of experiments. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.872825
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  • 10
    Electronic Resource
    Electronic Resource
    High-frequency core localized modes in neutral beam heated plasmas on TFTR (1996)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 3 (1996), S. 593-605 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A band of high-frequency modes in the range 50–150 kHz with intermediate toroidal mode numbers 4〈n〈10 are commonly observed in the core of supershot plasmas on TFTR [R. Hawryluk, Plasma Phys. Controlled Fusion 33, 1509 (1991)]. Two distinct varieties of magnetohydrodynamic (MHD) modes are identified, corresponding to a flute-like mode predominantly appearing around the q=1 surface and an outward ballooning mode for q(approximately-greater-than)1. The flute-like modes have nearly equal amplitude on the high-field and low-field side of the magnetic axis, and are mostly observed in moderate performance supershot plasmas with τE〈2τL, while the ballooning-like modes have enhanced amplitude on the low-field side of the magnetic axis and tend to appear in higher performance supershot plasmas with τE(approximately-greater-than)2τL, where τL is the equivalent L-mode confinement time. Both modes appear to propagate in the ion diamagnetic drift direction and are highly localized with radial widths Δr∼5–10 cm, fluctuation levels ñ/n, T˜e/Te〈0.01, and radial displacements ξr∼0.1 cm. Unlike the toroidally localized high-n activity observed just prior to major and minor disruptions on TFTR [E. D. Fredrickson et al., Proceedings of the 15th International Conference on Plasma Physics and Controlled Nuclear Fusion Research, Seville, Spain (International Atomic Energy Agency, Vienna, 1995), No. IAEA-CN-60/A-2-II-5], these modes are typically more benign and may be indicative of MHD activity excited by resonant circulating beam ions. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.871887
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