Relative cross sections for dissociative electron attachment (DEA) and ionization (DI) of the FEBID precursor, trimethyl (methylcyclopentadienyl) platinum(IV), MeCpPtMe3, are presented. The most pronounced DEA process is loss one methyl radical, while two or three groups along with hydrogen main pathway in DI. Further fragments formed through DI by more complex rearrangement reactions but complete dissociation to bare Pt− Pt+ minor. transient negative ion (TNI) formation discussed...

We report absolute dissociative electron attachment (DEA) and ionization (DI) cross sections for scattering from the focused beam induced deposition (FEBID) precursor Co(CO)3NO in incident energy range 0 to 140 eV. find that DEA leads mainly single carbonyl loss with a maximum section of 4.1 × 10−16 cm2, while fragmentation through DI results formation bare metal cation Co+ close 4.6 cm2 at 70 Though proceeds narrow range, this is found overlap significantly expected distribution secondary...

Using a crossed electron/molecule beam technique the dissociative electron attachment (DEA) to gas phase L-valine, (CH3)2CHCH(NH2)COOH, is studied by means of mass spectrometric detection product anions. Additionally, ab initio calculations structures and energies anions neutral fragments have been carried out at G2MP2 B3LYP levels. Valine previously aliphatic amino acids glycine alanine exhibit several common features due fact that low formation precursor ion can be characterized occupation...

Put a number on it: Absolute cross-sections for dissociative electron attachment (DEA) to the common precursor molecule cobalt tricarbonyl nitrosyl in gas phase are reported (see scheme, Co dark blue, O red, C gray, N light blue) along with branching ratios negative ions and affinities neutral radical fragments. Further, general mechanism of DEA is proposed metal–carbonyl compounds.

The threshold energy and the behaviour for electron impact ionization of CH4 were investigated at two temperatures, 293 693 K. study was performed with a crossed electron–molecule beam apparatus an resolution 120 meV full width half maximum. values energies (IEs) determined using fitting procedure involving convolution cross section distribution function. At K following IEs obtained: IE(CH4+/CH 4) = 12.65 ± 0.4 eV, IE1(CH3+/CH 13.58 0.1 eV (ion pair) IE2(CH3+/CH 14.34 eV. red shift in these...

RATIONALE Low‐energy secondary electrons are formed when energetic particles interact with matter. High‐energy or ions used to form metallic structures from adsorbed organometallic molecules like W(CO) 6 on surfaces. We investigated low‐energy electron attachment in the gas phase elucidate possible reactions during surface modification. METHODS Two crossed electron/molecular beam setups were utilised: (i) a high‐resolution monochromator combined quadrupole mass spectrometer which was for...

This article focuses on analytics of big distributed sensitive data a federated learning base. The main current focus is the most common use technology platforms: TensorFlow Federated, PySyft, Flower and IBM Federated Learning point view edge computing usability. Training PyTorch models with differential privacy (DP) more scalable than existing state-of-the-art methods. Differential mathematically rigorous framework for quantifying anonymisation data. It's often used in analytics, growing...

Low energy (0–3 eV) electron attachment to single formic acid (FA) and FA clusters is studied in crossed electron/molecular beam experiments. Single molecules undergo hydrogen abstraction via dissociative (DEA) thereby forming HCOO− within a low resonance peaking at 1.25 eV. Experiments on the isotopomers HCOOD DCOOH demonstrate that H/D occurs O–H/O–D site. In clusters, strongly enhanced leading variety of negatively charged complexes with dimer M2− (M ≡ HCOOH) its dehydrogenated form...

We have investigated the ionization threshold behavior of small helium cluster ions (cluster size n=2-10) formed via electron-impact neutral droplets and derive appearance energies for mass-selected using a nonlinear least-square-fitting procedure. Moreover, we report magic numbers in mass spectrum observed at electron energy 70 eV. The apparatus used present measurements is hemispherical monochromator combined with quadrupole spectrometer. Our experiment demonstrates that clusters are not...

Beta-diketones are a versatile class of compounds that can complex almost any metal in the periodic table elements. Their complexes found to be fairly stable and generally have sufficient vapor pressure for deposition techniques requiring volatile sources. Motivated by potential role low energy electrons focused electron beam induced deposition, we carried out crossed electron∕molecular study on dissociative attachment non-dissociative (NDEA) hexafluoroacetylacetone (HFAc) its bidentate...

In focused electron beam induced deposition (FEBID) acetylacetone plays a role as ligand in metal acetylacetonate complexes. As part of larger effort to understand the chemical processes FEBID, electron-induced reactions were studied both condensed layers and gas phase compared those acetone. X-ray photoelectron spectroscopy (XPS) shows that decomposition acetone yields non-volatile hydrocarbon residue while irradiation films produces contains not only much amounts carbon but also...

Signal processing of the brushed DC motor current was developed in this paper to obtain information about a rotor speed from measured current. The contains signal with frequency proportional speed. This is outcome commutation process occurring motor, and it called ripple component. Since number ripples per one rotation constant, can be estimated. A discrete bandpass filter floating bandwidth as main part processing. new interpretation used extract component acquire estimated set feedback...

Currently, one of the most used motor types for high-speed applications is permanent-magnet synchronous motor. However, this type machine has high costs and rare earth elements are needed its production. For these reasons, permanent-magnet-free alternatives being sought. An overview electrical machines shown that switched reluctance a possible alternative. This paper deals with design optimization motor, which should achieve same output power as existing while maintaining volume. The...

We report the results of experimental determination appearance energy values AE(Xn + /X) for formation multiply charged Ne, Ar and Xe ions up to n = 4 (Ne), 6 (Ar) 8 (Xe) following electron impact on atoms using a dedicated high-resolution ionization mass spectrometer. The data analysis uses Marquart-Levenberg algorithm, which is an iterative, nonlinear least-squares-fitting routine, in conjunction with either two-function or three-function fit based power threshold law. This allows us...

The interaction of low energy (<20 eV) electrons with a five monolayer (ML) film formic acid (HCOOH) deposited on cryogenically cooled monocrystalline Au substrate is studied by electron stimulated desorption (ESD) negatively charged fragment ions. A comparison results from gas phase experiments demonstrates the strong effect environment for negative ion formation via dissociative attachment (DEA). From condensed (FA) H− signal resonant feature peaking at 9 eV observed. In phase, dominant...

We report on attachment of free electrons to fullerenes C(n) (n = 60, 70, 76, 78, 80, 82, 84, 86) and Sc(3)N@C(80). The cross sections exhibit a strong resonance at 0 eV for all species. overall shape the anion yield versus electron energy is quite similar higher fullerenes, with minimum around 1 maximum which gradually shifts from 6 C(60) approximately 4 large n. endohedral Sc(3)N@C(80) exhibits particularly shallow below eV. model autoionization anions due consideration internal...