| Project/Area Number |
24654097
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | University of Tsukuba |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KADOWAKI Kazuo 筑波大学, 数理物質系, 教授 (00272170)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | テラヘルツ / 高温超伝導 / ジョセフソン効果 / 光吸収係数 |
|---|
| Research Abstract |
Using the high-Tc superconducting terahertz emitter, we developed a parameter-free system to measure the absorption coefficients of liquid samples in sub-terahertz frequency region. This allows us to get the absorption coefficient of water within 1% error at around 0.5 THz. Making a sample holder which allows the temperature to set between 5 and 70 degrees centigrade, we studied the absorption coefficient of Na2CO3 solution as functions of the concentration and temperature. We have also succeeded to modify the high-Tc superconducting terahertz emitter to work in liquid nitrogen, and developed a helium-free measurement system with a Schottky barrier diode detector.
|
