Reply to 'Comment on 'Increase in specific heat and possible hindered rotation of interstitial C{sub 2} molecules in neutron-irradiated graphite''

Journal Article · Sun Aug 01 00:00:00 EDT 2010 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.82.056102· OSTI ID:21421387

Iwata, Tadao; Watanabe, Mitsuo ^[1]

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1. Nuclear Professional School, School of Engineering, University of Tokyo, Tokai-mura, Naka-gun, Ibaraki-ken 319-1188 (Japan)

In a recent paper [T. Iwata and M. Watanabe, Phys. Rev. B 81, 014105 (2010)], we have interpreted the irradiation-induced increase in the low-temperature specific heat of neutron-irradiated graphite as due to the hindered rotation of interstitial C{sub 2} molecules with a rotational frequency of 1.39x10{sup 12} s{sup -1} in the periodic potential with a height of 0.040 eV, and concluded that the C{sub 2} molecules do not form covalent bonds with atoms in the adjacent graphite layers. In their Comment [preceding paper, C. D. Latham et al., Phys. Rev. B 82, 056101 (2010)] on this paper, based on the recent first-principles theoretical calculations and related experiments, Latham et al. assert that self-interstitial atoms cannot exist as clusters of nearly free C{sub 2} molecules. In this Reply, based on the experiments, we address the issues raised by Latham et al. in their Comment.

• OSTI ID: 21421387
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevB.82.056102; (c) 2010 The American Physical Society; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
CARBON
CHEMICAL BONDS
GRAPHITE
INTERSTITIALS
IRRADIATION
LAYERS
MOLECULES
NEUTRONS
PERIODICITY
PHYSICAL RADIATION EFFECTS
ROTATION
SPECIFIC HEAT
BARYONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HADRONS
MINERALS
MOTION
NONMETALS
NUCLEONS
PHYSICAL PROPERTIES
POINT DEFECTS
RADIATION EFFECTS
THERMODYNAMIC PROPERTIES
VARIATIONS