Producing ??d and ??t in vacuum

Knowles, P.; Beer, G. A.; Mason, G. R.; Olin, Å.; Bailey, J. M.; Beveridge, J. L.; Marshall, G. M.; Brewer, J. H.; Forster, B. M.; Huber, T. M.; Jacot‐Guillarmod, R.; Schellenberg, L.; Kammel, P.; Zmeskal, J.; Kunselman, A. R.; Martoff, C. J.; Petitjean, C.

doi:10.1007/bf01027987

Cited by 15 publications

(7 citation statements)

References 2 publications

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“…A description of the cryogenic target system used in this measurement has been presented elsewhere [5,31]. In brief, a continuous-flow liquid helium cryostat was used to cool two 51 µm thick gold foils to 3 K ( Fig.…”

Section: Experimental Equipmentmentioning

confidence: 99%

Muon catalyzed fusion in 3-K solid deuterium

et al. 1997

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Muon catalyzed fusion in deuterium traditionally has been studied in gaseous and liquid targets. The TRIUMF solid-hydrogen-layer target system has been used to study the fusion reaction rates in the solid phase of D 2 at a target temperature of 3 K. Products of two distinct branches of the reaction were observed: neutrons by a liquid organic scintillator and protons by a silicon detector located inside the target system. The effective molecular formation rate from the upper hyperfine state of d and the hyperfine transition rate have been measured: 3 2 ϭ2.71(7) stat (32) syst s Ϫ1 and 3 2 1 2 ϭ34.2(8) stat (1) syst s Ϫ1 . The molecular formation rate is consistent with other recent measurements, but not with the theory for isolated molecules. The discrepancy may be due to incomplete thermalization, an effect that was investigated by Monte Carlo calculations. Information on branching ratio parameters for the s and p wave dϩd nuclear interaction has been extracted.

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Section: Experimental Equipmentmentioning

confidence: 99%

Muon catalyzed fusion in 3-K solid deuterium

et al. 1997

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“…This gas loss is negligible for thick layers, but can be important for thin layers. The effect was examined for systems 2 and 3 by comparing two series of measurements; (1) thick films made by a single deposition of a large amount of input gas, in which the gas loss is negligible, and (2) thin films made by sequential depositions of small amounts of gas, where the gas loss from each deposition, if it exists, is multiplied to give a measurable effect after several depositions.…”

Section: Linearity Of Film Depositionmentioning

confidence: 99%

“…Recently, the use of thin films of solidified gases has attracted attention in particle beam experiments . A novel target system has been developed at TRIUMF for making films of solid hydrogen isotopes and other gases for experiments in muon catalyzed fusion [1][2][3]. Several measurements have been reported using the apparatus [4][5][6][7][8][9][10][11][12] and more are proposed for the future [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of solidified gas thin film targets via alpha particle energy loss

Fujiwara

Beer

Beveridge

et al. 1997

Nuclear Instruments and Methods in Physics Research Section A:

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A method is reported for measuring the thickness and uniformity of thin films of solidified gas targets. The energy of α particles traversing the film is measured and the energy loss is converted to thickness using the stopping power. The uniformity is determined by measuring the thickness at different positions with an array of sources. Monte Carlo simulations have been performed to study the film deposition mechanism. Thickness calibrations for a TRIUMF solid hydrogen target system are presented.

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“…At TRIUMF we have developed a new target system which uses multilayer of solid hydrogen thin films [13,14]. The use of µt beam obtained from the thin film target provides some unique advantages in tackling the epithermal resonances experimentally: (1) formation process can be isolated, to large extent, from the rest of the cycle, (2) epithermal energies are directly accessible due to the available beam energy, and (3) µt time of flight across the drift distance provide information of the resonance energies.…”

Section: Muon Catalyzed Fusionmentioning

confidence: 99%

Time-of-Flight Spectroscopy of Muonic Hydrogen Atoms and Molecules

et al.

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Abstract. Studies of muonic hydrogen atoms and molecules have been performed traditionally in bulk targets of gas, liquid or solid. At TRIUMF, Canada's meson facility, we have developed a new type of target system using multilayer thin films of solid hydrogen, which provides a beam of muonic hydrogen atoms in vacuum. Using the time-of-flight of the muonic atoms, the energy-dependent information of muonic reactions are obtained in direct manner. We discuss some unique measurements enabled by the new technique, with emphasis on processes relevant to muon catalyzed fusion.

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Producing ??d and ??t in vacuum

Cited by 15 publications

References 2 publications

Muon catalyzed fusion in 3-K solid deuterium

Muon catalyzed fusion in 3-K solid deuterium

Characterization of solidified gas thin film targets via alpha particle energy loss

Time-of-Flight Spectroscopy of Muonic Hydrogen Atoms and Molecules

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