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71.
A. A. Eliseev I. I. Ippolitov M. V. Kabanov V. V. Poddubnyi O. V. Ravodina Z. S. Teodorovich A. A. Shchipunov 《Russian Physics Journal》1998,41(9):922-926
Some results of two years of regular measurements of UV radiation at the earth's surface in Siberia (56.5o N, 85o E) are given. It is shown that the presence of snow cover increases the UV irradiation of the earth by scattered radiation
by 9–15%. In cloudless but windy weather, quasi-periodic fluctuations of UV irradiation with periods of 5–15 min and with
fluctuation swings of 1–10% are observed. Low-level, heavy cloudiness in summer considerably reduces (by an average of 30–35%)
UV irradiation, especially when the sun is low (down to 30o). Mid-and upper-level clouds increase the UV irradiation of the earth by scattered radiation. When the sun is high (30–50o) and there is heavy cloudiness, this increase can reach 28% in the UV-A spectral range.
Tomsk State University. Academician V. D. Kuznetsov Siberian Physics and Technology Institute, Tomsk State University. Institute
of Optical Monitoring, Siberian Branch of the Russian Academy of Sciences. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii,
Fizika, No. 9, pp. 71–74, September, 1998. 相似文献
72.
73.
M. Block D. Ackermann K. Blaum A. Chaudhuri Z. Di S. Eliseev R. Ferrer D. Habs F. Herfurth F. P. Heßberger S. Hofmann H.-J. Kluge G. Maero A. Martín G. Marx M. Mazzocco M. Mukherjee J. B. Neumayr W. R. Plaß W. Quint S. Rahaman C. Rauth D. Rodríguez C. Scheidenberger L. Schweikhard P. G. Thirolf G. Vorobjev C. Weber 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2007,45(1):39-45
The Penning-trap mass spectrometer SHIPTRAP allows precision mass
measurements of rare isotopes produced in fusion-evaporation reactions. In
the first period of operation the masses of more than 50 neutron-deficient
radionuclides have been measured.
In this paper the perspectives for direct mass measurements
of rare isotopes around nobelium are discussed and the achievable precision is addressed.
The temporal stability of the magnetic field, an important issue for the long
measurement times resulting from the low production rates, was investigated and the
time-dependent uncertainty due to magnetic field fluctuations was determined.
Based on the present performance direct mass measurements of nobelium isotopes are
already feasible. With several technical improvements heavier elements between Z=102–105 will be in reach. 相似文献
74.
A. Martın D. Ackermann G. Audi K. Blaum M. Block A. Chaudhuri Z. Di S. Eliseev R. Ferrer D. Habs F. Herfurth F. P. Heßberger S. Hofmann H. -J. Kluge M. Mazzocco M. Mukherjee J. B. Neumayr Yu. Novikov W. Plaß S. Rahaman C. Rauth D. Rodrıguez C. Scheidenberger L. Schweikhard P. G. Thirolf G. Vorobjev C. Weber 《The European Physical Journal A - Hadrons and Nuclei》2007,34(4):341-348
Direct mass measurements of nuclides near to the supposed end-point region of the astrophysical rp-process were performed
at SHIPTRAP, the Penning trap mass spectrometer at GSI Darmstadt. The masses of 24 nuclides were measured with relative uncertainties
between 5 . 10-8 and 2 . 10-7 . Three of them, 107Sb , 111I and 112I , were determined experimentally for the first time. The data analysis and mass evaluation are presented in detail. 相似文献
75.
P. G. Eliseev 《Opto-Electronics Review》2008,16(2):118-123
A nonlinear wave interaction is considered as a technique to increase the rotation sensitivity of the ring laser. The gyroscopic
scale factor K is calculated in an active laser gyro with a dispersive medium. K is in reverse proportion to the group index
n* = n + vdn/dv of the medium. In a monolithically-integrated GaAs ring laser, the value K ∼5000 is obtainable (radius ∼1
cm) in a linear case. In the presence of a strong wave, the dynamic nonlinear anomalous dispersion can provide an increase
of K by 10–100 times in the vicinity of critical points where n* passes zero. An expression of K is derived for the nonlinear
Sagnac effect. The nonlinear dispersion is discussed in terms of “slow/fast” light. 相似文献
76.
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79.
Conclusions A longitudinal electrostatic field tends to stabilize a jet of liquid dielectric. 相似文献
80.