Download or read book Superconductor Insulator Superconductor Mixer Devices with Gold Energy Relaxation Layers written by Stefan Selig and published by Cuvillier Verlag. This book was released on 2017-01-17 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superconductor insulator superconductor (SIS) mixers are used in heterodyne receivers for radio-astronomical observations. The high frequency resolution of the heterodyne technique combined with the high sensitivity of SIS mixers enables high resolution spectroscopy of the interstellar medium. This work focuses on the development of a novel superconductor insulator superconductor (SIS) mixer technology for 800 GHz that could in the future be used up to 1.1 THz. This is an important part of the THz spectrum that is still accessible for astronomy from ground based observatories. Compared to the existing mixers in this frequency regime the sensitivity shall be improved by the use of fully superconducting radio-frequency (RF) matching circuits. The main innovation in this work is the inclusion of an energy relaxation layer made of gold that enables the use of these fully superconducting RF circuits in combination with the mature niobium SIS junction technology. The energy relaxation layer prevents heating of the SIS junction due to Andreev reflection at the interface between the junction electrode and the matching circuit transmission line which was observed in earlier developments. This work includes the development of a fabrication process as well as extensive DC and RF measurements and their interpretation.

Download or read book Use of Services for Family Planning and Infertility United States 1982 written by Gerry E. Hendershot and published by . This book was released on 1988 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1982 statistics on the use of family planning and infertility services presented in this report are preliminary results from Cycle III of the National Survey of Family Growth (NSFG), conducted by the National Center for Health Statistics. Data were collected through personal interviews with a multistage area probability sample of 7969 women aged 15-44. A detailed series of questions was asked to obtain relatively complete estimates of the extent and type of family planning services received. Statistics on family planning services are limited to women who were able to conceive 3 years before the interview date. Overall, 79% of currently mrried nonsterile women reported using some type of family planning service during the previous 3 years. There were no statistically significant differences between white (79%), black (75%) or Hispanic (77%) wives, or between the 2 income groups. The 1982 survey questions were more comprehensive than those of earlier cycles of the survey. The annual rate of visits for family planning services in 1982 was 1077 visits /1000 women. Teenagers had the highest annual visit rate (1581/1000) of any age group for all sources of family planning services combined. Visit rates declined sharply with age from 1447 at ages 15-24 to 479 at ages 35-44. Similar declines with age also were found in the visit rates for white and black women separately. Nevertheless, the annual visit rate for black women (1334/1000) was significantly higher than that for white women (1033). The highest overall visit rate was for black women 15-19 years of age (1867/1000). Nearly 2/3 of all family planning visits were to private medical sources. Teenagers of all races had higher family planning service visit rates to clinics than to private medical sources, as did black women age 15-24. White women age 20 and older had higher visit rates to private medical services than to clinics. Never married women had higher visit rates to clinics than currently or formerly married women. Data were also collected in 1982 on use of medical services for infertility by women who had difficulty in conceiving or carrying a pregnancy to term. About 1 million ever married women had 1 or more infertility visits in the 12 months before the interview. During the 3 years before interview, about 1.9 million women had infertility visits. For all ever married women, as well as for white and black women separately, infertility services were more likely to be secured from private medical sources than from clinics. The survey design, reliability of the estimates and the terms used are explained in the technical notes.

Download or read book Superconductor insulator superconductor THz Mixer Integrated with a Superconducting Flux flow Oscillator written by Andrey Michailovich Barychev and published by . This book was released on 2005 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fabrication of Superconductor Insulator Superconductor Devices for Heterodyne Mixer Applications with Electron Beam Lithography written by Patrick Pütz and published by Cuvillier Verlag. This book was released on 2004 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1988-09 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1992 with total page 1358 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonequilibrium Superconductivity written by D. N. Langenberg and published by North Holland. This book was released on 1986 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spin Current written by Sadamichi Maekawa and published by Oxford University Press. This book was released on 2017 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a new branch of physics and technology, called spin-electronics or spintronics, the flow of electrical charge (usual current) as well as the flow of electron spin, the so-called "spin current", are manipulated and controlled together. This book is intended to provide an introduction and guide to the new physics and applications of spin current.

Download or read book Theory of Nonequilibrium Superconductivity written by N. B. Kopnin and published by Oxford University Press. This book was released on 2001-05-03 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text deals with the behaviour of superconductors in external fields varying in time, and with transport phenomena in superconductors.

Download or read book Metals Abstracts written by and published by . This book was released on 1994 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BTL Talks and Papers written by Bell Telephone Laboratories, inc. Technical Information Libraries and published by . This book was released on 1980 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bell Laboratories Talks and Papers written by Bell Telephone Laboratories, inc. Libraries and Information Systems Center and published by . This book was released on 1984 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scale Invariance written by Annick LESNE and published by Springer Science & Business Media. This book was released on 2011-11-04 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: During a century, from the Van der Waals mean field description (1874) of gases to the introduction of renormalization group (RG techniques 1970), thermodynamics and statistical physics were just unable to account for the incredible universality which was observed in numerous critical phenomena. The great success of RG techniques is not only to solve perfectly this challenge of critical behaviour in thermal transitions but to introduce extremely useful tools in a wide field of daily situations where a system exhibits scale invariance. The introduction of scaling, scale invariance and universality concepts has been a significant turn in modern physics and more generally in natural sciences. Since then, a new "physics of scaling laws and critical exponents", rooted in scaling approaches, allows quantitative descriptions of numerous phenomena, ranging from phase transitions to earthquakes, polymer conformations, heartbeat rhythm, diffusion, interface growth and roughening, DNA sequence, dynamical systems, chaos and turbulence. The chapters are jointly written by an experimentalist and a theorist. This book aims at a pedagogical overview, offering to the students and researchers a thorough conceptual background and a simple account of a wide range of applications. It presents a complete tour of both the formal advances and experimental results associated with the notion of scaling, in physics, chemistry and biology.

Download or read book Integrated Circuit Processes written by and published by . This book was released on 1975 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: