6 research outputs found

    INVESTIGATIONS OF INSTABILITIES IN A NON-SELF-SUSTAINED REPETITIVELY PULSED DISCHARGE

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    Non-self-sustained discharges are known to be unstable. Instabilities which limit the maximum energy input in pulsed modes of operation may develop in different ways. At asufficiently high discharge voltage an instability which occurs during a current pulse can be observed. The mechanism of this instability has already been studied in detail. At 1ower discharge voltages instability may develop vihen the external source of ionization has been turned off. As a result the discharge voltage should be decreased fuather. This leads to a reduced energy input per pulse in a CO2 repetitively pulsed laser when the frequency is high or the gas velocity is small [1, 2]

    ON THE MECHANISM OF GLOW DISCHARGE INSTABILITY FOLLOWING THE TURN-OFF A NON-SELF-SUSTAINED IONIZATION SOURCE

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    Instabilities in a non-self-sustained glow discharge which develop when external ionisation pulse is applied have been discussed earlier is many works. According to the present dominating point of vievr this instability is associated with the growth of the value of self-sustained ionization function. Heating are rarefaction of gas play an important role in this case

    Bloodsucking dipteran insects (Diptera) attacking humans and animals (the “gnus” complex) in northwestern Russia: I. General characteristics of the fauna

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