{"paper":{"title":"Cosmic Rays below Z=30 in a diffusion model: new constraints on propagation parameters","arxiv_id":"astro-ph/0101231","primary_cat":"astro-ph","submitted_at":"2001-01-15T10:32:09+00:00","version_compiled":"v2"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. 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matter.","hedge":{"p":1.0,"label":"hedged_possibility"},"own_p":0.04,"main_claim_p":0.02,"quantitative":false,"quantitative_p":0.04,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.99,"limitation":0.0,"future_work":0.01,"contribution":0.0,"interpretation":0.0}},{"i":2,"p":0.97,"id":"s2","own":false,"role":"background","text":"A very good understanding of the different aspects of cosmic ray propagation is therefore necessary.","hedge":{"p":0.95,"label":"asserted"},"own_p":0.05,"main_claim_p":0.02,"quantitative":false,"quantitative_p":0.03,"role_probabilities":{"gap":0.03,"method":0.0,"result":0.0,"background":0.97,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":3,"p":0.97,"id":"s3","own":true,"role":"contribution","text":"In this paper, we use cosmic ray nuclei data to give constraints on the diffusion parameters.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.92,"main_claim_p":0.08,"quantitative":false,"quantitative_p":0.04,"role_probabilities":{"gap":0.0,"method":0.03,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.97,"interpretation":0.0}},{"i":4,"p":0.78,"id":"s4","own":true,"role":"method","text":"Propagation is studied with semi-analytical solutions of a diffusion model, and we give new analytical solutions for radioactively produced species.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.94,"main_claim_p":0.06,"quantitative":false,"quantitative_p":0.06,"role_probabilities":{"gap":0.0,"method":0.78,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.22,"interpretation":0.0}},{"i":5,"p":0.98,"id":"s5","own":true,"role":"method","text":"Our model includes convection and reacceleration as well as the standard energy losses.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.59,"main_claim_p":0.03,"quantitative":false,"quantitative_p":0.05,"role_probabilities":{"gap":0.0,"method":0.98,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.02,"interpretation":0.0}},{"i":6,"p":0.99,"id":"s6","own":true,"role":"method","text":"We perform a $\\chi^2$ analysis over B/C data for a large number of configurations obtained by varying the relevant parameters of the diffusion model.","hedge":{"p":0.98,"label":"asserted"},"own_p":0.97,"main_claim_p":0.05,"quantitative":false,"quantitative_p":0.22,"role_probabilities":{"gap":0.0,"method":0.99,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":7,"p":1.0,"id":"s7","own":true,"role":"result","text":"A very good agreement with B/C data arises for a number of configurations, all of which are compatible with sub-Fe/Fe data.","hedge":{"p":0.98,"label":"asserted"},"own_p":0.93,"main_claim_p":0.18,"quantitative":false,"quantitative_p":0.37,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":8,"p":0.98,"id":"s8","own":true,"role":"result","text":"Different source spectra $Q(E)$ and diffusion coefficients $K(E)$ have been tried, but for both parameters only one form gives a good fit.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.95,"main_claim_p":0.12,"quantitative":true,"quantitative_p":0.6,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.98,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":9,"p":1.0,"id":"s9","own":true,"role":"result","text":"Another important result is that models without convection or without reacceleration are excluded.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.91,"main_claim_p":0.24,"quantitative":false,"quantitative_p":0.25,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":10,"p":1.0,"id":"s10","own":true,"role":"result","text":"We find that the various parameters, i.e. the diffusion coefficient normalisation $K_0$ and spectral index $\\delta$, the halo thickness $L$, the Alfv\\'en velocity $V_a$, and the convection velocity $V_c$ are strongly correlated.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.96,"main_claim_p":0.17,"quantitative":false,"quantitative_p":0.15,"role_probabilities":{"gap":0.0,"method":0.0,"result":1.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.0}},{"i":11,"p":1.0,"id":"s11","own":true,"role":"result","text":"We obtain limits on the spectral index $\\delta$ of thediffusion coefficient, and in particular we 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