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.

Autoren

Wolfgang Korsch
Mark Broering
Ashok Timsina
Kent KH 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

eISSN

1089-7623

ISSN

0034-6748

Ausgabe der Veröffentlichung

4

Zeitschrift

Review of Scientific Instruments

Sprache

en

Online publication date

2024

Datum der Veröffentlichung

2024

Status

Published

Herausgeber

AIP Publishing

Herausgeber URL

http://dx.doi.org/10.1063/5.0195101

Datum der Datenerfassung

2024

Titel

Electric charging effects on insulating surfaces in cryogenic liquids

Ausgabe der Zeitschrift

95

Datenquelle: Crossref

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.

Addresses

Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506, USA.

Autoren

Wolfgang Korsch
Mark Broering
Ashok Timsina
Kent KH 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

eISSN

1089-7623

Externe Identifier

PubMed Identifier: 38557888

Funding acknowledgements

Office of Nuclear Science, DOE Office of Science: DE-ACOS- 00OR22725
Office of Nuclear Science, DOE Office of Science: DE-SC0014622

Open access

false

ISSN

0034-6748

Ausgabe der Veröffentlichung

4

Zeitschrift

The Review of scientific instruments

Sprache

eng

Medium

Print

Paginierung

043101

Datum der Veröffentlichung

2024

Status

Published

Datum der Datenerfassung

2024

Titel

Electric charging effects on insulating surfaces in cryogenic liquids.

Sub types

Journal Article

Ausgabe der Zeitschrift

95

Datenquelle: Europe PubMed Central

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.

Date of acceptance

2024

Autoren

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

Autoren-URL

https://www.ncbi.nlm.nih.gov/pubmed/38557888

DOI

10.1063/5.0195101

eISSN

1089-7623

Ausgabe der Veröffentlichung

4

Zeitschrift

Rev Sci Instrum

Sprache

eng

Country

United States

PII

3280404

Datum der Veröffentlichung

2024

Status

Published

Titel

Electric charging effects on insulating surfaces in cryogenic liquids.

Sub types

Journal Article

Ausgabe der Zeitschrift

95

Datenquelle: PubMed

Electric charging effects on insulating surfaces in cryogenic liquids

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