Searching High and Low for the Axion
暫譯: 尋找阿克西翁的高低之處
Hipp, Alexander
- 出版商: Springer
- 出版日期: 2025-11-18
- 售價: $5,800
- 貴賓價: 9.5 折 $5,510
- 語言: 英文
- 頁數: 102
- 裝訂: Hardcover - also called cloth, retail trade, or trade
- ISBN: 3032022754
- ISBN-13: 9783032022752
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相關分類:
物理學 Physics
海外代購書籍(需單獨結帳)
商品描述
This book reports on cutting-edge analysis of data from the Axion Dark Matter eXperiment (ADMX) which aims to detect axions in the dark matter halo of the galaxy. ADMX uses a high-Q microwave cavity in a strong magnetic field to capture photons generated by the decay of axions. The author's pioneering "high resolution" analysis of ADMX data was motivated by simulations suggesting that there are unvirialized streams of dark matter axions which pass the Earth's location. All have nearly the same velocity and hence the same relative kinetic energy. The frequencies of the photons from decay of these unvirialized particles would fall within a very narrow range of the RF spectrum, perhaps only a few tens of milliHertz in width. This is in contrast to the kHz width of the expected Maxwellian spectrum for the virialized component. The author extended the analysis to a set of spectral resolutions between 20 mHz and 1 Hz, demonstrating the improved signal-to-noise ratio obtained by his method. In addition, this reports the author's work on the design, construction, and testing of tunable cavities for the ADMX experiment, work which led to the manufacture of a four-cavity array to be used in the next year to extend the search to higher axion masses.
商品描述(中文翻譯)
這本書報告了來自阿克西翁暗物質實驗（Axion Dark Matter eXperiment, ADMX）的前沿數據分析，該實驗旨在探測銀河系暗物質光環中的阿克西翁（axions）。ADMX在強磁場中使用高Q值的微波腔來捕捉由阿克西翁衰變產生的光子。作者對ADMX數據的開創性「高解析度」分析受到模擬的啟發，這些模擬表明存在未經重力化的暗物質阿克西翁流經地球位置。這些阿克西翁的速度幾乎相同，因此相對動能也相同。這些未經重力化粒子衰變產生的光子頻率將落在射頻（RF）頻譜的一個非常狹窄的範圍內，寬度可能僅有幾十毫赫茲（milliHertz）。這與預期的重力化組件的千赫茲（kHz）寬度的馬克士威（Maxwellian）頻譜形成對比。作者將分析擴展到20毫赫茲（mHz）到1赫茲（Hz）之間的一組頻譜解析度，展示了其方法所獲得的信噪比的改善。此外，這本書還報告了作者在ADMX實驗中可調腔體的設計、建造和測試方面的工作，這項工作導致製造出一個四腔體陣列，將在明年用於擴展對更高阿克西翁質量的搜索。
作者簡介
Alex Hipp was born on January 19, 1997, in Appleton, Wisconsin. He earned his bachelor's degree in physics and mathematics from Edgewood College in 2019. Afterward, he began his graduate work at the University of Florida, joining the Axion Dark Matter eXperiment working with Dr. David B. Tanner. He completed his Ph.D. in 2024. Alex is currently Postdoctoral Scholar at Northwestern University working on the Axion Resonant InterAction DetectioN Experiment. His primary research interest is axion detection.
作者簡介(中文翻譯)
亞歷克斯·希普（Alex Hipp）於1997年1月19日出生於威斯康辛州的阿普爾頓（Appleton）。他於2019年在埃奇伍德學院（Edgewood College）獲得物理學和數學的學士學位。之後，他開始在佛羅里達大學（University of Florida）進行研究生學習，加入了阿克西翁暗物質實驗（Axion Dark Matter eXperiment），並與大衛·B·坦納博士（Dr. David B. Tanner）合作。他於2024年完成博士學位。亞歷克斯目前是西北大學（Northwestern University）的博士後研究學者，參與阿克西翁共振相互作用探測實驗（Axion Resonant InterAction DetectioN Experiment）。他的主要研究興趣是阿克西翁的探測。
