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  • 1
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    (Table 1) Magnetic properties of sediments at DSDP Holes 92-597B and 92-597C
    PANGAEA
    In:  Supplement to: Nishitani, T (1986): Magnetic properties of basalt samples from Deep Sea Drilling Project Holes 597B and 597C. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 527-535, https://doi.org/10.2973/dsdp.proc.92.134.1986
    Details
    Publication Date: 2023-06-27
    Description: Measurements of magnetic properties were made on basalt samples recovered from Holes 597B and 597C. This paper describes the intensity and inclination of natural remanent magnetization (NRM), the intensity of anhysteretic remanent magnetization (ARM), the median demagnetizing field (MDF) for NRM and ARM, the initial susceptibility, the Koenigsberger ratio (Q). The mean inclinations (I) after alternating field demagnetization for Holes 597B and 597C are 45.4 ±7.1° and 45.0 ± 7.6°, respectively. These numeric quantities are greater than the calculated value of I = 34° expected at this site. A change of magnetic properties occurs at the depths of 100 and 120 m, respectively, which coincide with the boundaries between major petrological units.
    Keywords: 92-597B; 92-597C; ARM, Intensity, per unit volume; ARM, median destructive field of anhysteretic remanent magnetization; Deep Sea Drilling Project; Demagnetizing field; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Inclination; Koenigsberger ratio; Leg92; NRM, Declination; NRM, Inclination; NRM, Intensity; NRM, Median destructive field of natural remanent magnetization; Piece; Sample code/label; South Pacific; Susceptibility; Susceptibility meter (Bison Model 3101)
    Type: Dataset
    Format: text/tab-separated-values, 825 data points
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    DATA PANGAEA
  • 2
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    Paleomagnetic and rock magnetic measurements of igneous and metamorphic rocks of Hole 92-597B (2005)
    PANGAEA
    Details
    Publication Date: 2023-09-30
    Keywords: 92-597B; ChRM, Inclination; Comment; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Koenigsberger ratio; Leg92; Lithology/composition/facies; Magnetic susceptibility, volume; NRM, Declination; NRM, Inclination; NRM, Intensity; NRM, median destructive field of natural remanent magnetization, alternating field; Sample code/label; Sample ID; South Pacific
    Type: Dataset
    Format: text/tab-separated-values, 121 data points
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  • 3
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    Paleomagnetic and rock magnetic measurements of igneous and metamorphic rocks of Hole 92-597C (2005)
    PANGAEA
    Details
    Publication Date: 2023-09-30
    Keywords: 92-597C; ChRM, Inclination; Comment; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Koenigsberger ratio; Leg92; Lithology/composition/facies; Magnetic susceptibility, volume; NRM, Declination; NRM, Inclination; NRM, Intensity; NRM, median destructive field of natural remanent magnetization, alternating field; Sample code/label; Sample ID; South Pacific
    Type: Dataset
    Format: text/tab-separated-values, 640 data points
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  • 4
    Electronic Resource
    Electronic Resource
    Absolute calibration of the JT-60U neutron monitor using a 252Cf neutron source (abstract)a) : Proceedings of the 9th topical conference on high temperature plasma diagnostics (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 4558-4558 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Absolutely calibrated measurements of the neutron yield are important for the evaluation of the plasma performance such as the fusion gain Q in D-D operating tokamaks. The time-resolved neutron yield is measured with 235U and 238U fission chambers and 3He proportional counters in the JT-60U tokamak. The in situ calibration was performed by moving the 252Cf neutron source toroidally through the JT-60 vacuum vessel. Detection efficiencies of three 235U and two 3He detectors were measured for 92 locations of the neutron point source in toroidal scans at two different major radii. The total detection efficiency for the torus neutron source was obtained by the averaging the point efficiencies over the whole toroidal angle. The uncertainty of the resulting detection efficiency for the plasma neutrons is estimated to be ±11%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143666
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  • 5
    Electronic Resource
    Electronic Resource
    Pellet ablation profile measurements on the JT-60 tokamak : Eighth topical conference on high−temperature plasma diagnostics (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 3090-3092 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Four hydrogen pellets, two of 3 mm(large-closed-square)×3 mml pellets and two of 4 mmF(Slashthrough accent mark)×4 mml pellets, with the velocity of ∼2.3 km/s, were injected to OH and NB heated plasmas by a four-barrel pneumatic injector on the JT-60 tokamak. The pellet ablation profile was estimated by the measurement of the Hα emissions originating from the ablation cloud using a fiber optics array combined with the Hα -filtered multichannel photodiode. The fiber optics array consisting of ten channel bundles views the pellet pass in the vacuum vessel. The optical fiber was developed to tolerate baking up to 300 °C. The measured ablation profiles were compared with the calculated one by the neutral gas shielding model with a self-limiting effect. A good agreement was obtained between measured and calculated ablation profiles in OH plasmas; however, the fast-ion-induced ablation needed to be taken into account in the calculation for NB-heated plasmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141690
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  • 6
    Electronic Resource
    Electronic Resource
    Absolute calibration of the JT-60U neutron monitors using a 252Cf neutron sourcea) (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 5270-5278 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Absolutely calibrated measurements of the neutron yield are important for the evaluation of plasma performance such as the fusion gain Q in D–D operating tokamaks. The time-resolved neutron yield is measured with 235U and 238U fission chambers and 3He proportional counters in the JT-60U tokamak. The in situ calibration was performed by moving the 252Cf neutron source toroidally through the JT-60 vacuum vessel. Detection efficiencies of three 235U and two 3He detectors were measured for 92 locations of the neutron point source in toroidal scans at two different major radii. The total detection efficiency for the torus neutron source was obtained by averaging the point efficiencies over the whole toroidal angle. The uncertainty of the resulting detection efficiency for the plasma neutrons is estimated to be ±11%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143439
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  • 7
    Electronic Resource
    Electronic Resource
    Neutron calibration techniques for comparison of tokamak results (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 3501-3504 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A workshop on 1–3 August 1989 reviewed the techniques, uncertainties, and experiences of neutron calibration on PLT, TFTR, JET, Tore Supra, JT-60, JIPPT-IIU, Alcator C-Mod, ATF, FT, ASDEX, Textor, and DIII-D. In the summary session, the workshop participants discussed possible consensus neutron calibration techniques appropriate to D-D plasmas in tokamaks. The application of such techniques would facilitate a more accurate comparison of neutron yields from different devices, and also allow new calibration techniques to relate their precision to a reference value. General agreement was reached on the suitability of two techniques: (1) a 252Cf source calibration of epithermal neutron detectors, and (2) threshold neutron activation of Ni foils placed vertically above or below the plasma. This paper will present details on detector positioning, neutron transport calculations, and interlab normalization needed to accomplish the standardized calibration using a Cf neutron source.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141558
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  • 8
    Electronic Resource
    Electronic Resource
    Irradiation effects on potential diagnostic materials and components (abstract) : Proceedings of the 12th topical conference on high temperature plasma diagnostics (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 458-458 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Some diagnostic components in ITER will be subject to high levels of radiation (neutrons and gammas) and changes in their physical properties can result. During the ITER EDA an extensive range of tests on relevant materials, e.g., window materials, metals, and insulators, have been carried out and the changes in their physical properties have been measured. The effects examined include radiation induced electrical damage (RIED) and radiation induced conductivity (RIC) in potential insulators; radiation induced absorption and radio luminescence in potential optical materials; and changes to the reflectivity and surface properties of bulk metal mirrors. The results give a database of information which is of use to the designers of ITER diagnostic systems. Recent and planned work is concentrating on the testing of diagnostic prototypes in relevant radiation fields. The results obtained thus far will be summarized and the planned work outlined. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149523
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  • 9
    Electronic Resource
    Electronic Resource
    Development of steady-state magnetic sensor : Proceedings of the 12th topical conference on high temperature plasma diagnostics (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 435-438 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A prototype of a new mechanical sensor for steady-state magnetic field has been manufactured and tested which consists of a sensing coil and a load cell. The mechanical force sensor is a new type of magnetic sensor feasible for frequencies smaller than 0.1 Hz and employs the measurement of steady-state electromagnetic force. The sensor has been examined, and the following results were obtained. (1) A signal proportionality to simulated force was obtained in the load cell tests. (2) Reproducible signal drift concerning the temperature was obtained over the range of the International Thermonuclear Experimental Reactor environment. (3) Signal proportionality to the magnetic field was obtained in the steady-state magnetic field measurement tests. (4) The significant increase of load cell linearity error was not observed after irradiation of 7.2×106 Gy. These results indicate that the mechanical sensor will provide the practical feasibility in the long time magnetic field measurement. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149507
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  • 10
    Electronic Resource
    Electronic Resource
    Neutron diagnostics for ITER : Proceedings of the eleventh topical conference on high temperature plasma diagnostics (1997)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 569-572 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Neutron diagnostics will play a prominent role in the control and evaluation of thermonuclear plasmas in ignition device to test engineering concepts (ITER). As in present D-T experiments, measurements of neutron yield and of fusion power and power density are essential. In addition, the spectral width of the 14.1-MeV t(d,n)α neutron emission should be a reliable indicator of ion temperature in an ignited plasma. More detailed measurements of the neutron spectrum may allow determination of the densities of tritium, deuterium, and confined alpha particles. Although the central fusion power density in ITER will be comparable to the maximum values obtainable in TFTR and JET, neutron flux on the first wall will be ten times higher, and the neutron yield per discharge will be about five orders of magnitude greater than previously experienced. The thermal and radiation shielding necessary to protect the ITER superconducting coils from the intense flux at the first wall will restrict diagnostic access for neutron cameras and spectrometers, complicate the design of material activation systems, and limit the applicability of conventional calibration techniques for neutron source strength monitors. These considerations, together with unprecedented reliability requirements and the need for full remote handling of many components, pose demanding challenges for the design of the ITER neutron diagnostic systems. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1147906
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