Zobrazeno 1 - 6
of 6
pro vyhledávání: '"S. M. Penn"'
Publikováno v:
Review of Scientific Instruments. 61:775-782
We have constructed a versatile apparatus to study photoinitiated processes in molecular beams using a variety of generally applicable techniques. The instrument contains a pulsed, low‐energy electron gun that delivers space‐charge‐limited elec
Publikováno v:
Analytical Chemistry. 63:457-459
An atmospheric pressure ionization tandem quadrupole mass spectrometer system was used to detect, in real time, low levels of chemical warfare agents GB and VX in air. The system exhibits detection limits of 7.2 ppt (parts per trillion) for GB and 6
Autor:
M. P. Merino Tosoni, S. M. Pennisi
Publikováno v:
Semiárida, Vol 22 (2020)
La adopción generalizada de la siembra directa (SO) produjo cambios en el ecosistema agrícola-ganadero: entre otros, la disminución o aumento de poblaciones de animales y plantas. En las últimas campañas se observó abundante presencia de peludo
Externí odkaz:
https://doaj.org/article/c16e1c64d2db4730b400a22bc9bd3c48
Publikováno v:
Analytical Chemistry. 63:924-925
A simple rate equation analysis was used to model the ion-molecule chemistry occurring in the ionization source. The experimental results obtained for the detection of dimethyl methyl phosphonate, in the presence of varying concentrations of diisopro
Publikováno v:
The Journal of Chemical Physics. 89:2909-2917
Energy‐selective electron impact ionization of laser‐produced photofragments together with time‐of‐flight mass spectrometry is a general and sensitive means of studying primary photodissociation processes. Low‐energy electrons ionize photof
Publikováno v:
The Journal of Physical Chemistry. 92:1397-1399
The authors describe a new method for obtaining vibrational overtone spectra of polyatomic molecules in supersonic expansions that uses low-energy electrons to ionize the vibrationally excited molecules. Measuring the excitation spectrum of water in