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Tresch, S.; Mulhauser, F.; Piller, C.; Schaller, L. A.; Schellenberg, L.; Schneuwly, H.; Thalmann, Y.-A.; Werthmüller, A.; Ackerbauer, P.; Breunlich, W. H.; Cargnelli, M.; Gartner, Barbara L.; King, R.; Lauss, B.; Márton, J.; Prymas, W.; Zmeskal, J.; Petitjean, C.; Augsburger, Marc; Chatellard, D.; Egger, J.‐P.; Jeannet, E.; Egidy, T. von; Hartmann, F. J.; Mühlbauer, M.; Schott, W.

doi:10.1103/physreva.58.3528

Cited by 13 publications

(21 citation statements)

References 19 publications

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“…2. The formation of the dµ 3 He molecule practically coincides with the subsequent γ-ray emission because of the very short average life-time of dµ 3 He molecule (∼ 10 11 s −1 [2,20,22,28,29]).…”

Section: Radiative Molecular Peakmentioning

confidence: 93%

“…-the muon transfer from exited states of (µh) * to helium (occurring in D 2 + 3 He mixtures), t ≤ 10 −10 s [17,19,20,22].…”

Section: Methods Of the Measurementmentioning

confidence: 99%

“…On the other hand, analogous comparison with results presented in Refs. [20,21,22,61] is not possible due to significantly different helium concentrations and densities.…”

Section: Q He 1s Probabilitymentioning

confidence: 99%

“…-ground state muon transfer from µh to helium via the intermediate 2pσ molecular state, hµHe [24,25,26,27,28], and the subsequent decay to the unbound 1sσ state [2,20,22,29,30].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study ofμ-atomic andμ-molecular processes in pure helium and deuterium-helium mixtures

et al. 2005

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We present experimental results of -atomic and -molecular processes induced by negative muons in pure helium and helium-deuterium mixtures. The experiment was performed at the Paul Scherrer Institute ͑Swit-zerland͒. We measured relative intensities of muonic x-ray K series transitions in ͑ 3,4 He͒ * atoms in pure helium as well as in helium-deuterium mixtures. The d 3 He radiative decay probabilities for two different helium densities in D 2 + 3 He mixture were also determined. Finally, the q 1sHe probability for a d atom formedin an excited state to reach the ground state was measured and compared with theoretical calculations using a simple cascade model. ͑see Refs. ͓43,44͔͒. The effective d 3 He decay rates for both rotational states, J = 0 and J = 1 are defined as dec J = ␥ J + e J + p J . ͑40͒ FIG. 7. Energy spectra of the delayed events in runs III ͑left͒ and IV ͑right͒. FIG. 8. Time distributions in runs III ͑left͒ and IV ͑right͒ within the energy range 5.74− 7.50 keV. EXPERIMENTAL STUDY OF -ATOMIC AND -MOLECULAR PROCESSES… PHYSICAL REVIEW A 71, 032723 ͑2005͒ 032723-9

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Section: Radiative Molecular Peakmentioning

confidence: 93%

“…-the muon transfer from exited states of (µh) * to helium (occurring in D 2 + 3 He mixtures), t ≤ 10 −10 s [17,19,20,22].…”

Section: Methods Of the Measurementmentioning

confidence: 99%

“…On the other hand, analogous comparison with results presented in Refs. [20,21,22,61] is not possible due to significantly different helium concentrations and densities.…”

Section: Q He 1s Probabilitymentioning

confidence: 99%

“…-ground state muon transfer from µh to helium via the intermediate 2pσ molecular state, hµHe [24,25,26,27,28], and the subsequent decay to the unbound 1sσ state [2,20,22,29,30].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study ofμ-atomic andμ-molecular processes in pure helium and deuterium-helium mixtures

et al. 2005

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“…The q-factors, q pμ 1s and q dμ 1s , are the probabilities for the transition of the pμ and dμ atoms from the excited state to the 1s ground state. According to references [21,56,80,81], for the Maev et al experimental conditions the values of the quantities appearing in equation (B.1) were W p,d = 0.92 q pμ 1s = 0.5, and q dμ 1s = 0.8. Thus, as follows from our estimation, C dμ = 0.6 and not 0.8 as stated.…”

Section: Appendix Bmentioning

confidence: 99%

Study of the nuclear fusion in a muonic dμ3He complex

et al. 2006

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An experimental study of the nuclear fusion reaction in the charge-asymmetrical dμ 3 He complex (dμ 3 He → α (3.5 MeV) + p (14.64 MeV)) is presented. The 14.64 MeV protons were detected by three pairs of Si(dE − E) telescopes placed around the cryogenic target filled with D2 + 3 He gas at 34 K. The 6.85 keV γ rays emitted during the de-excitation of the dμ 3 He complex were detected by a germanium detector. The measurements were performed at two D2 + 3 He target densities, ϕ = 0.0585 and ϕ = 0.168 (relative to liquid hydrogen density) with an atomic concentration of 3 He c3 He = 0.0496. The values of the effective rate of nuclear fusion in dμ 3 He were obtained for the first time: λf = (4.5 +2.6 −2.0 ) × 10 5 s −1 (ϕ = 0.0585); λf = (6.9 +3.6 −3.0 ) × 10 5 s −1 (ϕ = 0.168). The J = 0 nuclear fusion rate in dμ 3 He was derived: λ J =0 f = (9.7 +5.7 −2.6 ) × 10 5 s −1 (ϕ = 0.0585); λ J =0 f = (12.4 +6.5 −5.4 ) × 10 5 s −1 (ϕ = 0.168).

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