Determining isotopic distributions of fission products with a Penning trap

Penttilä, H.; Karvonen, P.; Eronen, T.; Elomaa, V.‐V.; Hager, U.; Hakala, J.; Jokinen, A.; Kankainen, A.; Moore, I. D.; Perajärvi, K.; Rahaman, S.; Rinta‐Antila, S.; Rubchenya, V. A.; Saastamoinen, A.; Sonoda, T.; Äystö, J.

doi:10.1140/epja/i2010-10936-8

Cited by 35 publications

(49 citation statements)

References 50 publications

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“…The facility has been extensively explained elsewhere [4][5][6][7][8] but some key features will be repeated here. Figure 1 gives a principle view of the steps being described below, part a) of Fig.…”

Section: Experimental Methods Of Igisolmentioning

confidence: 99%

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Fission yield measurements at IGISOL

Lantz

Al-Adili

Gorelov

et al. 2016

EPJ Web of Conferences

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Abstract. The fission product yields are an important characteristic of the fission process. In fundamental physics, knowledge of the yield distributions is needed to better understand the fission process. For nuclear energy applications good knowledge of neutroninduced fission-product yields is important for the safe and efficient operation of nuclear power plants. With the Ion Guide Isotope Separator On-Line (IGISOL) technique, products of nuclear reactions are stopped in a buffer gas and then extracted and separated by mass. Thanks to the high resolving power of the JYFLTRAP Penning trap, at University of Jyväskylä, fission products can be isobarically separated, making it possible to measure relative independent fission yields. In some cases it is even possible to resolve isomeric states from the ground state, permitting measurements of isomeric yield ratios. So far the reactions U(p,f) and Th(p,f) have been studied using the IGISOL-JYFLTRAP facility. Recently, a neutron converter target has been developed utilizing the Be(p,xn) reaction. We here present the IGISOL-technique for fission yield measurements and some of the results from the measurements on proton induced fission. We also present the development of the neutron converter target, the characterization of the neutron field and the first tests with neutron-induced fission.

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Section: Experimental Methods Of Igisolmentioning

confidence: 99%

“…There have also been measurements for a number of nuclei with 50 MeV protons on 238 U and with 25 MeV deuterons on 238 U [4,5]. The IGISOL method has been developed over time, gradually improving the experimental method and analysis [12].…”

Section: Proton and Deuteron Induced Fission Yieldsmentioning

confidence: 99%

Fission yield measurements at IGISOL

Lantz

Al-Adili

Gorelov

et al. 2016

EPJ Web of Conferences

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“…The main idea is to combine the ion guide technique and the unique capabilities of JYFLTRAP [6] to separate the isomeric and the ground state [7,8]. In this method two states are distinguished due to the mass difference.…”

Section: Introductionmentioning

confidence: 99%

“…In this method two states are distinguished due to the mass difference. Previous experiments have already demonstrated that the resolving power of the facility is enough to perform isomeric yield ratio measurements for several cases [7,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Isomeric Yield Ratios of Fission Products With the Jyfltrap

Gorelov¹,

Penttilä²,

Lantz³

et al. 2013

Fission and Properties of Neutron-Rich Nuclei

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Several isomeric yield ratios of fission products in 25 MeV proton-induced fission of 238 U were measured recently at the JYFLTRAP facility. The ion-guide separator on-line method was utilized to produce radioactive ions. The double Penning-trap mass spectrometer was used to separate isomeric and ground states by their masses. To verify the new experimental technique γ-spectroscopy method was used to obtain the same isomeric ratios.

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“…New method to measure independent fission product yields was developed recently at the Accelerator Laboratory of the University of Jyväskylä [5]. This method combines the capability of the ion guide (IGISOL) technique and high mass resolving power of Penning trap (JYFLTRAP).…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental studies of the neutron rich fission product yields at intermediate energies

Rubchenya

Gorelov

Penttilä

et al. 2012

EPJ Web of Conferences

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Abstract.A new method to measure the fission product independent yields employing the ion guide technique and a Penning trap as a precision mass filter, which allows an unambiguous identification of the nuclides is presented. The method was used to determine the independent yields in the proton-induced fission of 232 Th and 238 U at 25 MeV. The data were analyzed with the consistent model for description of the fission product formation cross section at the projectile energies up to 100 MeV. Pre-compound nucleon emission is described with the two-component exciton model using Monte Carlo method. Decay of excited compound nuclei is treated within time-dependent statistical model with inclusion of the nuclear friction effect. The charge distribution of the primary fragment isobaric chain was considered as a result of frozen quantal fluctuations of the isovector nuclear density. The theoretical predictions of the independent fission product cross sections are used for normalization of the measured fission product isotopic distributions.

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Determining isotopic distributions of fission products with a Penning trap

Cited by 35 publications

References 50 publications

Fission yield measurements at IGISOL

Fission yield measurements at IGISOL

Measurement of Isomeric Yield Ratios of Fission Products With the Jyfltrap

Theoretical and experimental studies of the neutron rich fission product yields at intermediate energies

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