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Rotational emission spectroscopy in ultra-dense hydrogen p(0) and p(x)D(y)(0): Groups p(N), pD(2), p(2)D and (pD)(N)

Journal article
Authors Leif Holmlid
Published in Journal of Molecular Structure
Volume 1173
Pages 567-573
ISSN 0022-2860
Publication year 2018
Published at Department of Chemistry and Molecular Biology
Pages 567-573
Language en
Keywords Ultra-dense hydrogen, Rotational spectroscopy, Pulsed laser, laser-induced processes, rydberg matter, coulomb explosions, deuterium, d(0), nuclear-fusion, clusters, spectra, energy, catalyst, styrene, Chemistry
Subject categories Chemical Sciences


The rotational emission spectrum induced in ultra-dense deuterium D(0) by a 1064 nm pulsed Nd:YAG laser with 0.4 J pulses was recently reported (J. Mol. Struct. 1130 (2017) 829-836). Good agreement between theory and experiment was found. The bond distances were determined for spin levels s = 2, 3 and 4 with a precision as good as +/- 0.003 pm. The existence of these rotational lines supports the strongly bound cluster model of D(0). The similar spectra are now studied for ultra-dense protium p(0) and for the ultra-dense hydrogen mixture p(x)D(y)(0), giving several lines different from D(0). A rich spectrum of emission lines from p(N) and (pD)(N) groups in the chain clusters H-2N(0) is observed and partially assigned. The observation of unique lines gives evidence for rotations in groups pN, pD (identified previously), pD(2), p(2)D and (pD)(2) in the long chain-clusters, complementing the previously identified p(D) and D-N groups. Three-atomic and four-atomic clusters are of great interest, since the nuclear processes studied in several publications take place in such clusters. Emission lines from three-atomic planar groups pD(2)(0) and p(2)D(0), either in the chain clusters or as free clusters, are observed. Coupling of the dipole antennas (pD)(N) to neighboring parts of the homopolar chain-clusters H-2N(0) probably gives several weaker lines. No certain evidence of free symmetric or asymmetric H-4(0) tops like pD(3)(0) and p(2)D(2)(0) is found. Such strongly bound H-4(0) molecules were studied by TOF-MS previously and they have slightly shorter bond distances which makes their final identification more difficult. (C) 2018 Elsevier B.V. All rights reserved.

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