Launch: 2050 UT 7/19/2014 (Baikonur, Kazakhstan)
Landing: 0918 UT 9/1/2014 (Orenburg region, Russia)
Duration: 44 days
Orbit: apogee 571 km; perigee 258 km; inclination 64.9 degree
The passive dosimetry packages were housed in four identical boxes (“BOX #1-4”) distributed around the descent module (Fig. 1) at locations as indicated in Fig. 2. Each package consisted of six thermoluminescent detectors (TLD) and two layers of solid state nuclear track-etch detectors (SSNTD). The TLD were sensitive to the low LET components of the radiation field inside the module and the SSNTD were sensitive to the high LET components. An additional box, Box #5, was mounted outside the module.
For details of the measurements see:
A. Strádi et al., Cosmic radiation measurements on the Foton-M4 satellite by passive detectors. Acta Astronautica 131 110-112 (2017).
SSNTD data: Dosimetric quantities obtained from the LET spectra (above 10 keV μm−1)
TLD data: Absorbed dose rates measured in the low LET (≤10 keV μm−1) region of space radiation
Convolved data of SSNTD and TLD measurements:
|D corr. (μGy/day)||366||398||525||551||105|
|D total (μGy/day)||407||448||574||603||1129|
|H total (μSv/day)||887||1014||1057||1177||1412|
- D = the absorbed dose rates
- H = dose equivalent rates
- Q = quality factors
- D corr. = the corrected absorbed dose rate
Reference: A. Strádi et al., Cosmic radiation measurements on the Foton-M4 satellite by passive detectors. Acta Astronautica 131 (2017) 110-112.