RESUMO
We present time-resolved cyclotron resonance spectra of holes in p-Ge measured during single magnetic field pulses by using a rapid-scanning, fiber-coupled terahertz time-domain spectroscopy system. The key component of the system is a rotating monolithic delay line featuring four helicoid mirror surfaces. It allows measurements of THz spectra at up to 250 Hz repetition rate. Here we show results taken at 150 Hz. In a single 900 ms measurement 135 cyclotron resonance spectra were recorded that fully agree with what is expected from literature.
Assuntos
Ciclotrons/instrumentação , Espectroscopia Terahertz/instrumentação , Desenho Assistido por Computador , Campos Eletromagnéticos , Desenho de Equipamento , Análise de Falha de EquipamentoRESUMO
Self-concept differences between 190 American and 98 Danish 5th and 6th grade suburban students were examined in light of known societal and educational differences. Danish males and American females reported significantly higher self-confidence in personal attributes; American students reported higher achieving in school scores than Danish students. Results are discussed in the contex of cultural differences; further areas of investigation are offered.
