Time-resolved fluorescence using synchrotron radiation excitation: A powered fourth-harmonic cavity improves pulse stability

Krzysztof Polewski, Stephen L. Kramer, Zbigniew S. Kolber, John G. Trunk, Denise C. Monteleone, John C. Sutherland

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The pulsed nature or "time structure" of synchrotron radiation from electron storage rings is used to measure the kinetics of the decay of electronically excited states and is particularly useful because the wavelength of excitation can be chosen at will. However, changes in the length of the pulses of radiation from a storage ring resulting from the gradual decrease of current circulating in the ring during the course of a "fill" limit the duration of data collection, and hence photometric sensitivity. A fourth-harmonic cavity that was recently added to the vacuum ultraviolet (VUV) storage ring at the National Synchrotron Light Source slows the loss of current during a fill, and thus increases the total number of photons produced. When operated in a passive (unpowered) mode, however, the fourth-harmonic cavity increases both the average width of the photon pulses and the changes in width that occur during a fill, thus reducing the usefulness of the VUV ring in timing experiments. We demonstrate that operating the fourth-harmonic cavity in an active (powered) mode, while further increasing pulse duration, can stabilize pulse width, thereby restoring timing capabilities.

Original languageEnglish (US)
Pages (from-to)2562-2567
Number of pages6
JournalReview of Scientific Instruments
Volume65
Issue number8
DOIs
StatePublished - Dec 1 1994
Externally publishedYes

Fingerprint

Storage rings
Synchrotron radiation
synchrotron radiation
Fluorescence
harmonics
fluorescence
cavities
pulse duration
Photons
pulses
time measurement
Vacuum
excitation
vacuum
rings
photons
Synchrotrons
Excited states
Light sources
light sources

ASJC Scopus subject areas

  • Instrumentation

Cite this

Time-resolved fluorescence using synchrotron radiation excitation : A powered fourth-harmonic cavity improves pulse stability. / Polewski, Krzysztof; Kramer, Stephen L.; Kolber, Zbigniew S.; Trunk, John G.; Monteleone, Denise C.; Sutherland, John C.

In: Review of Scientific Instruments, Vol. 65, No. 8, 01.12.1994, p. 2562-2567.

Research output: Contribution to journalArticle

Polewski, Krzysztof ; Kramer, Stephen L. ; Kolber, Zbigniew S. ; Trunk, John G. ; Monteleone, Denise C. ; Sutherland, John C. / Time-resolved fluorescence using synchrotron radiation excitation : A powered fourth-harmonic cavity improves pulse stability. In: Review of Scientific Instruments. 1994 ; Vol. 65, No. 8. pp. 2562-2567.
@article{1b0e334472514196b4f4af10a378c299,
title = "Time-resolved fluorescence using synchrotron radiation excitation: A powered fourth-harmonic cavity improves pulse stability",
abstract = "The pulsed nature or {"}time structure{"} of synchrotron radiation from electron storage rings is used to measure the kinetics of the decay of electronically excited states and is particularly useful because the wavelength of excitation can be chosen at will. However, changes in the length of the pulses of radiation from a storage ring resulting from the gradual decrease of current circulating in the ring during the course of a {"}fill{"} limit the duration of data collection, and hence photometric sensitivity. A fourth-harmonic cavity that was recently added to the vacuum ultraviolet (VUV) storage ring at the National Synchrotron Light Source slows the loss of current during a fill, and thus increases the total number of photons produced. When operated in a passive (unpowered) mode, however, the fourth-harmonic cavity increases both the average width of the photon pulses and the changes in width that occur during a fill, thus reducing the usefulness of the VUV ring in timing experiments. We demonstrate that operating the fourth-harmonic cavity in an active (powered) mode, while further increasing pulse duration, can stabilize pulse width, thereby restoring timing capabilities.",
author = "Krzysztof Polewski and Kramer, {Stephen L.} and Kolber, {Zbigniew S.} and Trunk, {John G.} and Monteleone, {Denise C.} and Sutherland, {John C.}",
year = "1994",
month = "12",
day = "1",
doi = "10.1063/1.1144651",
language = "English (US)",
volume = "65",
pages = "2562--2567",
journal = "Review of Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics Publising LLC",
number = "8",

}

TY - JOUR

T1 - Time-resolved fluorescence using synchrotron radiation excitation

T2 - A powered fourth-harmonic cavity improves pulse stability

AU - Polewski, Krzysztof

AU - Kramer, Stephen L.

AU - Kolber, Zbigniew S.

AU - Trunk, John G.

AU - Monteleone, Denise C.

AU - Sutherland, John C.

PY - 1994/12/1

Y1 - 1994/12/1

N2 - The pulsed nature or "time structure" of synchrotron radiation from electron storage rings is used to measure the kinetics of the decay of electronically excited states and is particularly useful because the wavelength of excitation can be chosen at will. However, changes in the length of the pulses of radiation from a storage ring resulting from the gradual decrease of current circulating in the ring during the course of a "fill" limit the duration of data collection, and hence photometric sensitivity. A fourth-harmonic cavity that was recently added to the vacuum ultraviolet (VUV) storage ring at the National Synchrotron Light Source slows the loss of current during a fill, and thus increases the total number of photons produced. When operated in a passive (unpowered) mode, however, the fourth-harmonic cavity increases both the average width of the photon pulses and the changes in width that occur during a fill, thus reducing the usefulness of the VUV ring in timing experiments. We demonstrate that operating the fourth-harmonic cavity in an active (powered) mode, while further increasing pulse duration, can stabilize pulse width, thereby restoring timing capabilities.

AB - The pulsed nature or "time structure" of synchrotron radiation from electron storage rings is used to measure the kinetics of the decay of electronically excited states and is particularly useful because the wavelength of excitation can be chosen at will. However, changes in the length of the pulses of radiation from a storage ring resulting from the gradual decrease of current circulating in the ring during the course of a "fill" limit the duration of data collection, and hence photometric sensitivity. A fourth-harmonic cavity that was recently added to the vacuum ultraviolet (VUV) storage ring at the National Synchrotron Light Source slows the loss of current during a fill, and thus increases the total number of photons produced. When operated in a passive (unpowered) mode, however, the fourth-harmonic cavity increases both the average width of the photon pulses and the changes in width that occur during a fill, thus reducing the usefulness of the VUV ring in timing experiments. We demonstrate that operating the fourth-harmonic cavity in an active (powered) mode, while further increasing pulse duration, can stabilize pulse width, thereby restoring timing capabilities.

UR - http://www.scopus.com/inward/record.url?scp=2442512625&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442512625&partnerID=8YFLogxK

U2 - 10.1063/1.1144651

DO - 10.1063/1.1144651

M3 - Article

AN - SCOPUS:2442512625

VL - 65

SP - 2562

EP - 2567

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

SN - 0034-6748

IS - 8

ER -