Author: Maarten Jeroen van Dort
Publisher:
ISBN:
Category :
Languages : en
Pages : 100

View

Book Description

Author: Maarten Jeroen van Dort
Publisher:
ISBN:
Category :
Languages : en
Pages : 103

View

Book Description

Author: Walter E. Bron
Publisher: Springer Science & Business Media
ISBN: 1461325013
Category : Science
Languages : en
Pages : 682

View

Book Description
Phonons are always present in the solid state even at an absolute temperature of 0 K where zero point vibrations still abound. Moreover, phonons interact with all other excitations of the solid state and, thereby, influence most of its properties. Historically experimental information on phonon transport came from measurements of thermal conductivity. Over the past two decades much more, and much more detailed, information on phonon transport and on many of the inherent phonon interaction processes have come to light from experiments which use nonequilibrium phonons to study their dynamics. The resultant research field has most recently blossomed with the development of ever more sophisticated experimental and theoretical methods which can be applied to it. In fact, the field is moving so rapidly that new members of the research community have difficulties in keeping up to date. This NATO Advanced Study Institute (ASI) was organized with the objective of overcoming the information barrier between those expert in the field and those who are new to it. Thus it was decided to (i) organize a set of tutorially based lectures covering most of the important facets in the field, and (ii) to produce an Institute proceedings which would serve both as the first general textbook, as well as a valuable reference book, for this field of knowledge.

Author: Wolfgang Eisenmenger
Publisher: North Holland
ISBN:
Category : Crystals
Languages : en
Pages : 744

View

Book Description

Author: Walter E. Bron
Publisher:
ISBN:
Category : Lattice dynamics
Languages : en
Pages : 679

View

Book Description

Author: Xiao-jun Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 4

View

Book Description
We have investigated the spectral and temporal dynamics associated with phonon decay in the YAG:Pr3+ system at a range of temperature between 9 and 25 K. Nonequilibrium phonons were generated using defect induced one phonon absorption (DlOPA) of far infrared (FIR) radiation. Phonon detection was achieved optically using a variation of absorption vibronic sideband phonon spectroscopy. Far infrared radiation in the frequency range 30 - 113 cm-1 was generated using a transversely excited atmospheric pressure CO2 laser pumped superradiant cell. This configuration produces 50 ns FIR pulses with single pulse energies in the range 1 - 10 mJ. The optical detection pulses were generated using a YAG:Nd3+ pumped dye laser. The generation and detection beams were incident on the sample in a counterpropagating geometry with the phonon generated fluorescence collected at 90 deg. The sample was mounted in a two stage cold cycle refrigerator allowing the temperature to be varied between 9 and 300 K. The sample temperature was determined optically.

Author: Alan Sakell
Publisher: Fulton Books, Inc.
ISBN: 164952840X
Category : Fiction
Languages : en
Pages : 212

View

Book Description
What would you do if the people who are meant to love and protect you the most, were monsters? How far would you go to escape the very worst kind of punishments imaginable? What would be your breaking point?