Versatile cluster based photoelectron spectrometer

Abstract

Articles you may be interested inA versatile photoelectron spectrometer for pressures up to 30 mbar Rev. Sci. Instrum. 85, 075119 (2014); 10.1063/1.4890665 A versatile electron-ion coincidence spectrometer for photoelectron momentum imaging and threshold spectroscopy on mass selected ions using synchrotron radiation Rev. Sci. Instrum. 80, 023102 (2009); 10.1063/1.3079331Competition between linear and cyclic structures in monochromium carbide clusters CrC n − and CrC n (n=2-8):A photoelectron spectroscopy and density functional study A recently constructed cluster based photoelectron spectrometer is described. This instrumentation is unique in that it enables the kinetic energy analysis of electrons ejected from both anions and neutral clusters. This capability permits the investigation of discrete electronic levels in all charge states ͑anionic, neutral, and cationic͒. A laser vaporization plasma reactor cluster source affixed with a sublimation cell is employed to produce a variety of metal clusters, and the resulting cluster distributions are analyzed with time-of-flight mass spectrometry. The corresponding electronic structure is analyzed with a "magnetic bottle" photoelectron spectrometer. Examples of instrument performance operating in both anion photodetachment and neutral multiphoton ionization ͑MPI͒ modes are provided. In the case of neutral MPI, the corresponding product distribution is collected with a Wiley-McLaren ͓Rev. Sci. Instrum. 26, 1150 ͑1955͔͒ mass spectrometer mounted perpendicular to the magnetic bottle photoelectron spectrometer.

Observation of d–p hybridized aromaticity in lanthanum-doped boron clusters

“…The experiments were carried out by employing a velocity map imaging (VMI) analyzer that has been described in detail elsewhere. 31,32 In brief, LaB x À clusters were generated by laser vaporization of a 1/4 00 pure lanthanum rod in the presence of a high-purity helium carrier gas (typically 50 psi) seeded with 0.1% diborane gas. The cluster anions were then mass analyzed using a Wiley-McLaren time-of-flight mass spectrometer.…”

Photoelectron imaging of small aluminum clusters: quantifying s–p hybridization

“…The experiments were conducted on an instrument that has been thoroughly described in the literature. 34,35 Aluminum clusters were created by laser ablation of an aluminum rod in the presence of a helium carrier gas at stagnation pressures of 50-60 psi. The anions created were extracted and analyzed by a time-of-flight mass spectrometer.…”

Probing the Geometric and Electronic Structures of the Monogadolinium Oxide GdOn–1/0 (n = 1–4) Clusters

“…The details of the experimental apparatus used in the current investigation have been described previously. , Briefly, in the laser vaporization (LaVa) source, the second harmonic (532 nm) output of a Nd:YAG laser with a frequency of 10 Hz was focused to ablate a pure Gd rod (0.25 in. diameter).…”