TY - JOUR
T1 - Development of an “α-TOF” detector for correlated measurement of atomic masses and decay properties
AU - Niwase, T.
AU - Wada, M.
AU - Schury, P.
AU - Haba, H.
AU - Ishizawa, S.
AU - Ito, Y.
AU - Kaji, D.
AU - Kimura, S.
AU - Miyatake, H.
AU - Morimoto, K.
AU - Morita, Kosuke
AU - Rosenbusch, M.
AU - Wollnik, H.
AU - Shanley, T.
AU - Benari, Y.
N1 - Funding Information:
This work was financially supported by the Japan Society for the Promotion of Science KAKENHI (Grant No. 17H06090 ). Additionally, T.N. wishes to thank the RIKEN Junior Research Associate Program.
Funding Information:
This work was financially supported by the Japan Society for the Promotion of Science KAKENHI (Grant No. 17H06090). Additionally, T.N. wishes to thank the RIKEN Junior Research Associate Program.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/2/11
Y1 - 2020/2/11
N2 - We have developed a novel detector, referred to as an “α-TOF detector”, for correlated measurements of atomic masses and decay properties of low-yield, short-lived radioactive isotopes using a multi-reflection time-of-flight mass spectrograph. By correlating measured time-of-flight signals with decay events, it will be possible to suppress background events and obtain accurate, high-precision mass and half-life values even in cases of very low event rates. An offline test of the α-TOF detector has shown that the time-of-flight detection efficiency for 5.48 MeV α-rays is more than 90% and yields a time resolution of 250.6(68) ps and an alpha-energy resolution of 141.1(9) keV. Using a two-dimensional spectrum of the correlated α-ray energy and time-of-flight, the α-rays from mixed α sources could be resolved. Subsequent testing using α-emitting nuclei extracted offline from a gas cell provide verification of the α-ray based characterization.
AB - We have developed a novel detector, referred to as an “α-TOF detector”, for correlated measurements of atomic masses and decay properties of low-yield, short-lived radioactive isotopes using a multi-reflection time-of-flight mass spectrograph. By correlating measured time-of-flight signals with decay events, it will be possible to suppress background events and obtain accurate, high-precision mass and half-life values even in cases of very low event rates. An offline test of the α-TOF detector has shown that the time-of-flight detection efficiency for 5.48 MeV α-rays is more than 90% and yields a time resolution of 250.6(68) ps and an alpha-energy resolution of 141.1(9) keV. Using a two-dimensional spectrum of the correlated α-ray energy and time-of-flight, the α-rays from mixed α sources could be resolved. Subsequent testing using α-emitting nuclei extracted offline from a gas cell provide verification of the α-ray based characterization.
UR - http://www.scopus.com/inward/record.url?scp=85075859015&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85075859015&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2019.163198
DO - 10.1016/j.nima.2019.163198
M3 - Article
AN - SCOPUS:85075859015
SN - 0168-9002
VL - 953
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
M1 - 163198
ER -