نتایج جستجو برای: negative ion
تعداد نتایج: 728793 فیلتر نتایج به سال:
Journal:
:SHINKU
1995
Journal:
:Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
2005
Journal:
Journal of Sciences Islamic Republic of Iran
1993
The 70 ev positive and negative ion mass spectra of ring-substituted nitrobenzenes were studied. The influence of the substituent group on the fragmentation modes of the molecular ions is discussed. The effect of pressure in the formation of negative ions was also studied. As expected, the ratio of fragment ions to negative molecular ions decreased with increasing pressure in ion source.
Journal:
:The Journal of Chemical Physics
1985
Journal:
:SHINKU
1995
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