10,062 research outputs found

    Bank Lending in Japan: its Determinants and Macroeconomic Implications.

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    We examine the role of bank loans in the Japanese economy by analyzing the lending behavior of banking firms and the investment behavior of non-financial firms.BANKS ; LENDING ; ESTIMATOR

    CeMnNi4: an impostor half-metal

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    Recent experiments show CeMnNi4_{4} to have a nearly integer magnetic moment and a relatively large transport spin polarization, as probed by Andreev reflection, suggesting that the material is a half metal or close to it. However, the calculations reported here show that it is not a half metal at all, but rather a semimetal of an unusual nature. Phonon properties should also be quite unusual, with rattling low-frequency Mn modes. Nontrivial transport properties, including a large thermolectric figure of merit, ZT,ZT, are predicted in the ferromagnetic state of the well ordered stoichiometric CeMnNi4_{4}Comment: 4 pages, 6 fig

    A transceiver module of the Mu radar

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    The transceiver (TR) module of a middle and upper atmospheric radar is described. The TR module used in the radar is mainly composed of two units: a mixer (MIX unit) and a power amplifier (PA unit). The former generates the RF wave for transmission and converts the received echo to the IF signal. A 41.5-MHz local signal fed to mixers passes through a digitally controlled 8-bit phase shifter which can change its value up to 1,000 times in a second, so that the MU radar has the ability to steer its antenna direction quickly and flexibly. The MIX unit also contains a buffer amplifier and a gate for the transmitting signal and preamplifier for the received one whose noise figure is less than 5 dB. The PA unit amplifies the RF signal supplied from the MIX unit up to 63.7 dBm (2350 W), and feeds it to the crossed Yagi antenna

    Direct Observation of the Hyperfine Transition of the Ground State Positronium

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    We report the first direct measurement of the hyperfine transition of the ground state positronium. The hyperfine structure between ortho-positronium and para-positronium is about 203 GHz. We develop a new optical system to accumulate about 10 kW power using a gyrotron, a mode converter, and a Fabry-P\'{e}rot cavity. The hyperfine transition has been observed with a significance of 5.4 standard deviations. The transition probability is measured to be A=3.11.2+1.6×108A = 3.1^{+1.6}_{-1.2} \times 10^{-8} s1^{-1} for the first time, which is in good agreement with the theoretical value of 3.37×1083.37 \times 10^{-8} s1^{-1}

    Manipulating ionization path in a Stark map: Stringent schemes for the selective field ionization in highly excited Rb Rydberg atoms

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    We have developed a quite stringent method in selectivity to ionize the low angular- momentum (\ell) states which lie below and above the adjacent manifold in highly excited Rb Rydberg atoms. The method fully exploits the pulsed field-ionization characteristics of the manifold states in high slew-rate regime: Specifically the low \ell state below (above) the adjacent manifold is firstly transferred to the lowest (highest) state in the manifold via the adiabatic transition at the first avoided crossing in low slew-rate regime, and then the atoms are driven to a high electric field for ionization in high slew-rate regime. These extreme states of the manifold are ionized at quite different fields due to the tunneling process, resulting in thus the stringent selectivity. Two manipulation schemes to realize this method actually are demonstrated here experimentally.Comment: 10 pages, 4 figure
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