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続く 続き

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http://rcwww.kek.jp/norm/index-e.html 高エネルギー加速器研究機構 2011年4月20日 11:28分現在 0.11 μSv/h

• 平常時

0.07-0.09 μSv/h 3月15日 3月14日

http://rcwww.kek.jp/norm/index-e.html

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Chart 1 Result of first measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:15 March, 2011 14:39-15 March,2011 17:34 Air collected:105 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 3.0×10-5 Tellurium132 2.0×10-5 Caesium134 6.7×10-7 Caesium136 1.2×10-7 Caesium137 6.5×10-7 Tellurium129m 8.1×10-7 Iodine133 5.6×10-7 Technetium99m*1 3.6×10-8 *1 Technetium99m is a daughter nuclide of molybdenum-99, and the measured value varies with the time duration between the air sampling and the measurement.

3月15日 2011年3月15日

Chart 2 (Bq/cm3) Measurement period:15 March, 2011 17:48 - 16 March,2011 8:48 Air collected:540 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 2.1×10-5 Tellurium132 4.9×10-6 Caesium134 6.6×10-7 Caesium136 1.1×10-7 Caesium137 6.5×10-7 Tellurium129m 1.2×10-6 Iodine133 1.3×10-6 Technetium99m*1 3.7×10-8

3月15 – 16 日 2011年3月15-16日

Chart 3 (Bq/cm3) Measurement period:16 March, 2011 9:08-17:08 Air collected:288 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 3.2×10-5 Tellurium132 3.0×10-6 Caesium134 5.2×10-7 Caesium136 7.9×10-8 Caesium137 5.0×10-7 Tellurium129m 9.0×10-7 Iodine133 3.6×10-7 Technetium99*1 2.0×10-8

3月16日 2011年3月16日

Chart 4 (Bq/cm3) Measurement period:16 March, 2011 17:21-17 March,2011 9:21 Air collected:576 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 2.7×10-7 Tellurium132 7.8×10-9 Caesium134 2.9×10-9 Caesium136 no detection*2 Caesium137 2.1×10-9 Tellurium129m no detection Iodine133 6.5×10-9 Technetium99*1 9.9×10-9 *2 [Correction] Caesium136 was not detected. Previous data 3.9×10-8 was mistakenly described from the

• ld sample. We are sorry for this mistake. (Mar/28 17:00)

3月16 – 17 日 2011年3月16 - 17日

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Chart 5 (Bq/cm3) Measurement period:17 March, 2011 10:07-18 March,2011 10:07 Air collected:864 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 3.2×10-7 Tellurium132 3.8×10-9 Caesium134 2.4×10-9 Caesium136 3.5×10-10 Caesium137 2.1×10-9 Tellurium129m no detection Iodine133 3.8×10-9 Technetium99m*1 no detection

3月17 – 18 日 2011年3月17 - 18日

Chart 6 (Bq/cm3) Measurement period:18 March, 2011 10：16-20 March,2011 9:55 Air collected:1715 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 4.9×10-7 Tellurium132 1.2×10-9 Caesium134 1.1×10-9 Caesium136 no detection Caesium137 1.1×10-9 Tellurium129m no detection Iodine133 1.2×10-9 Technetium99m*1 no detection

3月18 – 20 日 2011年3月18 - 19日

Chart 7 (Bq/cm3) Measurement period:20 March, 2011 10：00-22 March,2011 9:54 Air collected:1724 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 2.3×10-5 Tellurium132 4.6×10-6 Caesium134 7.3×10-6 Caesium136 8.7×10-7 Caesium137 7.0×10-6 Tellurium129m 3.2×10-6 Iodine133 7.2×10-9 Technetium99m*1 4.6×10-7

3月20 – 22 日 2011年3月20 - 22日

Chart 8 (Bq/cm3) Measurement period:22 March, 2011 10：00-23 March,2011 11:10 Air collected:906 cubic meter Nuclide CONC.(Bq/cm3) Iodine131 9.6×10-6 Tellurium132 5.7×10-7 Caesium134 1.2×10-7 Caesium136 1.1×10-8 Caesium137 1.2×10-7 Tellurium129m 4.9×10-7 Iodine133 no detection Technetium99m*1 5.3×10-8

3月22 – 23 日 2011年3月22 - 23日

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Chart1 Result of 9th measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:23 March, 2011 11:20 - 24 March,2011 11:02 Air collected:853 cubic meter Nuclide CONC (Bq/cm3) Iodine131 1.9×10-6 Tellurium132 9.7×10-9 Caesium134 1.7×10-8 Caesium136 2.1×10-9 Caesium137 1.7×10-8 Tellurium129m no detection Iodine133 no detection Technetium99m*2 4.5×10-9

3月23 – 24 日 2011年3月23 - 24日

Chart2 Result of 10th measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:24 March, 2011 11:15 - 25 March,2011 10:43 Air collected:845 cubic meter Nuclide CONC (Bq/cm3) Iodine131 7.3×10-7 Tellurium132 3.2×10-9 Caesium134 5.0×10-9 Caesium136 no detection Caesium137 5.2×10-9 Tellurium129m no detection Iodine133 no detection Technetium99m no detection

3月24 – 25 日 2011年3月24 - 25日

Chart1 Result of 11th measurement: Detected nuclide and its concentration (Bq/cm3)

Measurement period:25 March, 2011 10:58 - 26 March, 2011 10:22 Air collected:844 cubic meter

Nuclide CONC (Bq/cm3) Iodine131 5.7×10-7 Tellurium132 3.1×10-9 Caesium134 9.3×10-9 Caesium136 no detection Caesium137 10.0×10-9 Tellurium129m no detection Iodine133 no detection Technetium99m no detection

3月25 – 26 日 2011年3月25 - 26日

Chart2 Result of 12th measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:26 March, 2011 10:29 - 27 March, 2011 11:03 Air collected:884 cubic meter Nuclide CONC (Bq/cm3) Iodine131 1.1×10-7 Tellurium132 6.6×10-10 Caesium134 1.6×10-9 Caesium136 no detection Caesium137 1.6×10-9 Tellurium129m no detection Iodine133 no detection Technetium99m no detection

3月26 – 27 日 2011年3月26 - 27日

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Chart3 Result of 13th measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:27 March, 2011 11:23 - 28 March, 2011 10:48 Air collected:850 cubic meter Nuclide CONC (Bq/cm3) Iodine131 1.0×10-7 Tellurium132 3.9×10-10 Caesium134 6.3×10-10 Caesium136 no detection Caesium137 5.2×10-10 Tellurium129m no detection Iodine133 no detection Technetium99m no detection

3月27 – 28 日 2011年3月27 - 28日

Chart4 Result of 14th measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:28 March, 2011 10:59 - 30 March, 2011 10:10 Air collected:1698 cubic meter Nuclide CONC (Bq/cm3) Iodine131 5.7×10-7 Tellurium132 1.7×10-8 Caesium134 2.5×10-7 Caesium136 1.2×10-8 Caesium137 2.3×10-7 Tellurium129m 5.3×10-8 Iodine133 no detection Technetium99m 1.2×10-8 Technetium99m is a daughter nuclide of molybdenum-99, are in the transient equilibrium. Gamma rays from other nuclei, Barium-140 and Lanthanum-140 are also observed.

3月28 – 30 日 2011年3月28 - 30日

Chart5 Result of 15th measurement: Detected nuclide and its concentration (Bq/cm3) Measurement period:30 March, 2011 10:17 - 1 April, 2011 10:10 Air collected:1723 cubic meter Nuclide CONC (Bq/cm3) Iodine131 2.2×10-7 Tellurium132 6.9×10-9 Caesium134 1.3×10-7 Caesium136 6.1×10-9 Caesium137 1.2×10-7 Tellurium129 m 3.3×10-8 Iodine133 no detection Technetium99 m 7.7×10-9 Technetium99m is a daughter nuclide of molybdenum-99, are in the transient equilibrium. Gamma rays from other nuclei, Barium-140 and Lanthanum-140 are also observed.

3月30日-4月1日 2011年3月30 – 4月1日