A 4π dilepton spectrometer: PEPSI

A Buda; JCS Bacelar; A Balanda; J van Klinken; Z Sujkowski; A van der Woude

doi:10.1016/0168-9002(93)91233-D

A 4π dilepton spectrometer: PEPSI

A Buda
, JCS Bacelar
, A Balanda
, J van Klinken
, Z Sujkowski^*
, A van der Woude

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

14 Citations (Scopus)

Abstract

A novel positron-electron pair spectroscopy instrument (PEPSI) was designed to measure transitions in the energy region 10-40 MeV. It consists of Nd2Fe14B permanent magnets forming a compact 4 pi magnetic filter consisting of 12 positron and 20 electron mini-orange-like spectrometers. The response function of PEPSI has bern measured with mono-energetic beams of electrons from 5 to 20 MeV. The PEPSI spectrometer was used for measuring the internal pair conversion coefficient (alpha(pi)) of the 15.1 MeV M1 transition from a J(pi) = 1(+) state to the ground state in C-12. Our experimental value of alpha(pi) = (3.3+/-0.5) x 10(-3) is in good agreement with theoretical estimates.

Original language	English
Pages (from-to)	479-486
Number of pages	8
Journal	Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment
Volume	335
Issue number	3
DOIs	https://doi.org/10.1016/0168-9002(93)91233-D
Publication status	Published - 1-Nov-1993

Keywords

PAIR
CONVERSION

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A4ndileptonspectrometer:PEPSI
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title = "A 4π dilepton spectrometer: PEPSI",

abstract = "A novel positron-electron pair spectroscopy instrument (PEPSI) was designed to measure transitions in the energy region 10-40 MeV. It consists of Nd2Fe14B permanent magnets forming a compact 4 pi magnetic filter consisting of 12 positron and 20 electron mini-orange-like spectrometers. The response function of PEPSI has bern measured with mono-energetic beams of electrons from 5 to 20 MeV. The PEPSI spectrometer was used for measuring the internal pair conversion coefficient (alpha(pi)) of the 15.1 MeV M1 transition from a J(pi) = 1(+) state to the ground state in C-12. Our experimental value of alpha(pi) = (3.3+/-0.5) x 10(-3) is in good agreement with theoretical estimates.",

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T1 - A 4π dilepton spectrometer: PEPSI

AU - Buda, A

AU - Bacelar, JCS

AU - Balanda, A

AU - van Klinken, J

AU - Sujkowski, Z

AU - van der Woude, A

PY - 1993/11/1

Y1 - 1993/11/1

N2 - A novel positron-electron pair spectroscopy instrument (PEPSI) was designed to measure transitions in the energy region 10-40 MeV. It consists of Nd2Fe14B permanent magnets forming a compact 4 pi magnetic filter consisting of 12 positron and 20 electron mini-orange-like spectrometers. The response function of PEPSI has bern measured with mono-energetic beams of electrons from 5 to 20 MeV. The PEPSI spectrometer was used for measuring the internal pair conversion coefficient (alpha(pi)) of the 15.1 MeV M1 transition from a J(pi) = 1(+) state to the ground state in C-12. Our experimental value of alpha(pi) = (3.3+/-0.5) x 10(-3) is in good agreement with theoretical estimates.

AB - A novel positron-electron pair spectroscopy instrument (PEPSI) was designed to measure transitions in the energy region 10-40 MeV. It consists of Nd2Fe14B permanent magnets forming a compact 4 pi magnetic filter consisting of 12 positron and 20 electron mini-orange-like spectrometers. The response function of PEPSI has bern measured with mono-energetic beams of electrons from 5 to 20 MeV. The PEPSI spectrometer was used for measuring the internal pair conversion coefficient (alpha(pi)) of the 15.1 MeV M1 transition from a J(pi) = 1(+) state to the ground state in C-12. Our experimental value of alpha(pi) = (3.3+/-0.5) x 10(-3) is in good agreement with theoretical estimates.

KW - PAIR

KW - CONVERSION

U2 - 10.1016/0168-9002(93)91233-D

DO - 10.1016/0168-9002(93)91233-D

M3 - Article

SN - 0168-9002

VL - 335

SP - 479

EP - 486

JO - Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment

JF - Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment

IS - 3

ER -

A 4π dilepton spectrometer: PEPSI

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