Electric charging effects on insulating surfaces in cryogenic liquids

Wolfgang Korsch; Mark Broering; Ashok Timsina; Kent K.H. Leung; Joshua Abney; Dmitry Budker; Bradley W. Filippone; Jiachen He; Suman Kandu; Mark McCrea; Murchhana Roy; Christopher Swank; Weijun Yao

doi:10.1063/5.0195101

Electric charging effects on insulating surfaces in cryogenic liquids

Wolfgang Korsch, Mark Broering, Ashok Timsina, Kent K.H. Leung, Joshua Abney, Dmitry Budker, Bradley W. Filippone, Jiachen He, Suman Kandu, Mark McCrea, Murchhana Roy, Christopher Swank, Weijun Yao

Physics And Astronomy

Producción científica: Article › revisión exhaustiva

Resumen

This paper presents a new technique to study the adsorption and desorption of ions and electrons on insulating surfaces in the presence of strong electric fields in cryoliquids. The experimental design consists of a compact cryostat coupled with a sensitive electro-optical Kerr device to monitor the stability of the electric fields. The behavior of nitrogen and helium ions on a poly(methyl methacrylate) (PMMA) surface was compared to a PMMA surface coated with a mixture of deuterated polystyrene and deuterated polybutadiene. Ion accumulation and removal on these surfaces were unambiguously observed. Within the precision of the data, both surfaces behave similarly for the physisorbed ions. The setup was also used to measure the (quasi-)static dielectric constant of PMMA at T ≈ 70 K. The impact of the ion adsorption on the search for a neutron permanent electric dipole moment in a cryogenic environment, such as the nEDM@SNS experiment, is discussed.

Idioma original	English
Número de artículo	043101
Publicación	Review of Scientific Instruments
Volumen	95
N.º	4
DOI	https://doi.org/10.1063/5.0195101
Estado	Published - abr 1 2024

Nota bibliográfica

Publisher Copyright:
© 2024 Author(s).

Financiación

The authors want to thank the individuals at the University of Kentucky who took shifts and gave up time on weekends to help collect data. Special thanks go to Ritwika Chakraborty. The authors would also like to thank Robert Golub, Mike Hayden, and Steve Lamoreaux for their discussion and useful suggestions. This work would not have been possible without the generous funding from the Office of Nuclear Physics of the DOE Office of Science, Grant Nos. DE-SC0014622 and DE-ACOS-00OR22725.

Financiadores	Número del financiador
Robert Golub
University of Kentucky
Mike Hayden
Institute for Nuclear Physics
Office of Science Programs	DE-ACOS-00OR22725, DE-SC0014622

ASJC Scopus subject areas

Instrumentation

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title = "Electric charging effects on insulating surfaces in cryogenic liquids",

abstract = "This paper presents a new technique to study the adsorption and desorption of ions and electrons on insulating surfaces in the presence of strong electric fields in cryoliquids. The experimental design consists of a compact cryostat coupled with a sensitive electro-optical Kerr device to monitor the stability of the electric fields. The behavior of nitrogen and helium ions on a poly(methyl methacrylate) (PMMA) surface was compared to a PMMA surface coated with a mixture of deuterated polystyrene and deuterated polybutadiene. Ion accumulation and removal on these surfaces were unambiguously observed. Within the precision of the data, both surfaces behave similarly for the physisorbed ions. The setup was also used to measure the (quasi-)static dielectric constant of PMMA at T ≈ 70 K. The impact of the ion adsorption on the search for a neutron permanent electric dipole moment in a cryogenic environment, such as the nEDM@SNS experiment, is discussed.",

author = "Wolfgang Korsch and Mark Broering and Ashok Timsina and Leung, \{Kent K.H.\} and Joshua Abney and Dmitry Budker and Filippone, \{Bradley W.\} and Jiachen He and Suman Kandu and Mark McCrea and Murchhana Roy and Christopher Swank and Weijun Yao",

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AU - Korsch, Wolfgang

AU - Broering, Mark

AU - Timsina, Ashok

AU - Leung, Kent K.H.

AU - Abney, Joshua

AU - Budker, Dmitry

AU - Filippone, Bradley W.

AU - He, Jiachen

AU - Kandu, Suman

AU - McCrea, Mark

AU - Roy, Murchhana

AU - Swank, Christopher

AU - Yao, Weijun

PY - 2024/4/1

Y1 - 2024/4/1

N2 - This paper presents a new technique to study the adsorption and desorption of ions and electrons on insulating surfaces in the presence of strong electric fields in cryoliquids. The experimental design consists of a compact cryostat coupled with a sensitive electro-optical Kerr device to monitor the stability of the electric fields. The behavior of nitrogen and helium ions on a poly(methyl methacrylate) (PMMA) surface was compared to a PMMA surface coated with a mixture of deuterated polystyrene and deuterated polybutadiene. Ion accumulation and removal on these surfaces were unambiguously observed. Within the precision of the data, both surfaces behave similarly for the physisorbed ions. The setup was also used to measure the (quasi-)static dielectric constant of PMMA at T ≈ 70 K. The impact of the ion adsorption on the search for a neutron permanent electric dipole moment in a cryogenic environment, such as the nEDM@SNS experiment, is discussed.

AB - This paper presents a new technique to study the adsorption and desorption of ions and electrons on insulating surfaces in the presence of strong electric fields in cryoliquids. The experimental design consists of a compact cryostat coupled with a sensitive electro-optical Kerr device to monitor the stability of the electric fields. The behavior of nitrogen and helium ions on a poly(methyl methacrylate) (PMMA) surface was compared to a PMMA surface coated with a mixture of deuterated polystyrene and deuterated polybutadiene. Ion accumulation and removal on these surfaces were unambiguously observed. Within the precision of the data, both surfaces behave similarly for the physisorbed ions. The setup was also used to measure the (quasi-)static dielectric constant of PMMA at T ≈ 70 K. The impact of the ion adsorption on the search for a neutron permanent electric dipole moment in a cryogenic environment, such as the nEDM@SNS experiment, is discussed.

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JO - Review of Scientific Instruments

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Electric charging effects on insulating surfaces in cryogenic liquids

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Nota bibliográfica

Financiación

ASJC Scopus subject areas

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