التفاصيل البيبلوغرافية
| العنوان: |
Measurement of gravitational and thermal effects in a liquid-actuated torsion pendulum |
| المؤلفون: |
Allocca, Annalisa, Bassan, Massimo, De Laurentis, Martina, De Rosa, Rosario, Di Fiore, Luciano, D’Onofrio, Luca, Errico, Luciano, Garufi, Fabio, Grado, Aniello, Hoyle, C. D., Lucchesi, David, Minenkov, Yury, Passeggio, Giuseppe, Pucacco, Giuseppe, Sequino, Valeria, Tarallo, Oreste, Trozzo, Lucia, Visco, Massimo |
| المساهمون: |
Commissione Scientifica Nazionale 5, Instituto Nazionale di Fisica Nucleare, Gordon and Betty Moore Foundation |
| المصدر: |
Review of Scientific Instruments ; volume 94, issue 11 ; ISSN 0034-6748 1089-7623 |
| بيانات النشر: |
AIP Publishing |
| سنة النشر: |
2023 |
| مصطلحات موضوعية: |
Instrumentation |
| الوصف: |
We describe a proof-of-principle experiment aiming to investigate the inverse-square law of gravitation at the centimeter scale. The sensor is a two-stage torsion pendulum, while actuation is accomplished by a variable liquid mass. The time-varying gravitational force is related to the level of the circulating fluid in one or two containers at a short distance from the test mass, with all moving mechanical parts positioned at a large distance. We provide a description of the apparatus and present the first results. We identified a systematic effect of thermal origin, producing offsets of few fNm in torque and of about 10 pN in force. When this effect is neutralized, the measurements agree well with the predictions of simulations. We also discuss the upcoming instrument upgradations and the expected sensitivity improvement that will allow us to perform measurements with adequate accuracy to investigate the unexplored regions of the α−λ parameter space of a Yukawa-like deviation from the Newtonian potential. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1063/5.0162604 |
| DOI: |
10.1063/5.0162604/18250035/114501_1_5.0162604.pdf |
| الإتاحة: |
https://doi.org/10.1063/5.0162604Test |
| رقم الانضمام: |
edsbas.8BBBEA55 |
| قاعدة البيانات: |
BASE |
