Tripathi, DurgeshMason, Helen E.Del Zanna, GiulioBradshaw, Steven2013-03-132014-03-192012Tripathi, Durgesh, Mason, Helen E., Del Zanna, Giulio, et al.. "OBSERVATIONS OF PLASMA UPFLOW IN A WARM LOOP WITH HINODE/EIS." <i>The Astrophysical Journal Letters,</i> 754, (2012) The American Astronomical Society: L4. http://dx.doi.org/10.1088/2041-8205/754/1/L4.https://hdl.handle.net/1911/70580A complete understanding of Doppler shift in active region loops can help probe the basic physical mechanism involved into the heating of those loops. Here, we present observations of upflows in coronal loops detected in a range of temperatures (log T = 5.8–6.2). The loop was not discernible above these temperatures. The speed of upflow was strongest at the footpoint and decreased with height. The upflow speed at the footpoint was about 20 km s−1 in Fe viii, which decreased with temperature, being about 13 km s−1 in Fe x, about 8 km s−1 in Fe xii, and about 4 km s−1 in Fe xiii. To the best of our knowledge, this is the first observation providing evidence of upflow of plasma in coronal loop structures at these temperatures. We interpret these observations as evidence of chromospheric evaporation in quasi-static coronal loops.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlesunatmosphere – Suncorona – Suntransition region – SunUV radiationhttp://dx.doi.org/10.1088/2041-8205/754/1/L4